Schedule

We demonstrate an interferometer that is opaque in one arm, where the optical signal is coherently detected, processed, and remodulated. In case of constructive interference, stable operation is shown for 5 Gbit/s OOK signaling.

Authors:Md Salek Mahmud/Karlsruhe Institute of Technology Juned Nassir Kemal/Karlsruhe Institute of Technology Md Mosaddek Hossain Adib/Karlsruhe Institute of Technology Christoph Füllner/Karlsruhe Institute of Technology Alexander Schindler/Technische Universität Berlin Patrick Runge/Fraunhofer Heinrich Hertz Institut Martin Schell/Technische Universität Berlin Wolfgang Freude/Karlsruhe Institute of Technology Christian Koos/Karlsruhe Institute of Technology Sebastian Randel/Karlsruhe Institute of Technology

The first chip-scale wavelength-selective silicon photonic switch in the O-band is demonstrated. We describe the design and report results from the crossbar switch, which utilizes three pairs of microring resonators per crossing for wavelength selectivity.

Authors:Takako Hirokawa/University of California Santa Barbara Andrew Netherton/University of California Santa Barbara Mitra Saeidi/University of California Santa Barbara Luke Theogarajan/University of California Santa Barbara John Bowers/University of California Santa Barbara Adel Saleh/University of California Santa Barbara Clint Schow/University of California Santa Barbara

We demonstrate the first 2.5D integrated, wavelength division multiplexing, silicon photonic receiver. The multi-chip module utilizes a silicon interposer to integrate the four-channel photonic cascaded microdisk receiver with four electronic transimpedance amplifiers.

Authors:Nathan Abrams/Columbia University Qixiang Cheng/Columbia University Madeleine Glick/Columbia University Moises Jezzini/Tyndall National Institue Padraic Morrissey/Tyndall National Institue Peter O'Brien/Tyndall National Institue Keren Bergman/Columbia University

We demonstrate a phase retrieval receiver to recover the full-field with intensity-only measurements based on parallel alternative projections. Phase accuracy improvement is verified by detecting a 30-Gbaud QPSK signal transmitted over 55-km single-mode fiber.

Authors:Hanzi Huang/Shanghai University Haoshuo Chen/Nokia Bell Labs Yetian Huang/Shanghai University Zhengxuan Li/Shanghai University Qianwu Zhang/Shanghai University Nicolas Fontaine/Nokia Bell Labs Roland Ryf/Nokia Bell Labs Yingxiong Song/Shanghai University

Neural networks yearn for parallel connections, yet such interconnects were not scalable. We demonstrate scalable, integrated photonic interconnects using 3D printed waveguides, achieving a record of 2500 densely connected channels/mm$^{2}$ as well as convolutional layers.

Authors:Daniel Brunner/CNRS Jhonny Moughames/CNRS Xavier Porte/CNRS Michael Thiel/NanoscribeGmbH Maxime Jacquot/CNRS Laurent Larger/CNRS Muamer Kadic/CNRS

We present an optically addressable nonvolatile vanadium dioxide (VO2) memory device that exhibits sustained voltage oscillations upon writing. This discovery paves the path toward VO2-based artificial neurons for neuromorphic computing.

Authors:Joyce Poon/Max-Planck-Inst fur Mikrostrukturphysik

Abstract to be provided.

Authors:Zongfu Yu/University of Wisconsin-Madison

Machine Learning has gained increasing attention in communication systems. We will then provide an overview of current ML applications in optical communications and networks and highlight upcoming trends and challenges.


Authors:Alan Pak Tao Lau/Hong Kong Polytechnic University

The collective aim of high-speed and intelligent processing tightens the contact between photonics and neural networks. Recent advances in AI-powered photonics and photonics-enabled neural networks are reviewed to reveal the promising integration.

Authors:Weiwen Zou/Shanghai Jiao Tong University Shaofu Xu/Shanghai Jiao Tong University Xiuting Zou/Shanghai Jiao Tong University Bowen Ma/Shanghai Jiao Tong University

TBD

Authors:Min Gu/Univ of Shanghai Science & Technology

TBD

Authors:Lute Maleki/OEwaves, Inc.

Overview of a framework to predict point cloud artifacts through knowledge of the survey method, the scene dynamic range, and a scatter point spread function.

Authors:Hamilton Shepard/Waymo Chase Salsbury/Waymo

Automotive OEM know the public is willing to pay for ADAS technology that prevent accidents. ADAS also clearly helps to sell cars – all top 10 selling vehicles in 2019 featured active safety technology. Many OEM are working to add lidar sensing to cameras and radars to make perception robust and representative of real-world conditions and not just minimum regulatory standards to earn a higher crash rating. This movement is enabled by increasingly smaller, efficient and cost effective lidar concepts being offered by the innovative market – the latest from Velodyne being its $100 Velabit lidar. The requirements for lidar in ADAS and robotaxis are different – this poses additional challenges to lidar makers – who on one hand have to find the right value proposition of performance to price and on the other hand are trying to accelerate the technology out of the lab into the mass production world. In this presentation, Velodyne will present some of our findings and roadmap to bring safety and economies of scale to the masses through our lidar innovations.

Authors:Rajeev Thakur/Velodyne Lidar, Inc.

Small pixel pitch with a large array size is highly anticipated for solid-state lidar transmitter and receiver. We demonstrate 2D beam steering with reduced effective pixel pitch by harnessing transitional state of the mirror array.

Authors:Chuan Luo/University of Arizona Brandon Hellman/University of Arizona Guanghao Chen/University of California San Diego Joshua Rodriguez/TuSimple Inc. Diego Jimenez/University of Arizona Charles Perkins/University of Arizona Jae-Hyeung Park/Inha University Ali Akoglu/University of Arizona Yuzuru Takashima/University of Arizona

Urban methane emissions from major United States East Coast cities are investigated using an aircraft platform equipped with a suite of high precision spectroscopic instrumentation. Sensing details and results will be presented.

Authors:Genevieve Plant/University of Michigan Eric Kort/University of Michigan Colm Sweeney/National Oceanic and Atmospheric Administration

Open-path mid-infrared dual-comb spectroscopy is performed over a 2 km-long link with bandwidth spanning the atmospheric transmission window near 4.7 μm. We quantify mixing ratios for CO, CO₂, N₂O, H₂O, and O₃.

Authors:Daniel Herman/National Institute of Standards and Technology Fabrizio Giorgetta/National Institute of Standards and Technology Gabriel Ycas/National Institute of Standards and Technology Eleanor Waxman/National Institute of Standards and Technology Ian Coddington/National Institute of Standards and Technology Nathan Newbury/National Institute of Standards and Technology Kevin Cossel/National Institute of Standards and Technology

We report a FPGA implementation of coherent averaging for dual comb spectroscopy and demonstrate with free-running combs a 7 times improvement in random noise as compared with post-processed raw data given the same acquisition time.

Authors:Yifeng Chen/Princeton University Jonas Westberg/Princeton University Jie Liu/Princeton University Gerard Wysocki/Princeton University

We depoly a mid-infrared dual-comb spectrometer in a van for field measurements of volatile organic compounds (VOCs) at an oil and gas drilling site. We use a similar, laboratory system to measure ambient VOCs over a 2-km round-trip path.

Authors:Kevin Cossel/National Institute of Standards and Technology Eleanor Waxman/National Institute of Standards and Technology Fabrizio Giorgetta/National Institute of Standards and Technology Esther Baumann/National Institute of Standards and Technology Gabriel Ycas/National Institute of Standards and Technology Daniel Herman/National Institute of Standards and Technology Jacob Friedlein/National Institute of Standards and Technology Daniel Bon/Colorado Department of Public Health and Environment Ian Coddington/National Institute of Standards and Technology Nathan Newbury/National Institute of Standards and Technology

We present first evidence of backwards lasing from Krypton present in atmospheric air. Two-photon femtosecond UV excitation leads to stimulated emission at 759nm. The air laser can be used for standoff detection.

Authors:Arthur Dogariu/Princeton University Richard Miles/Texas A&M University

We describe progress towards fiber-delivered broadband mid-IR light for multi-species spectroscopy in inaccessible environments. Water and HCl are resolved after propagating 3-µm light through five meters of hollow-core fiber, illustrating the technique's potential.

Authors:Oguzhan Kara/Heriot-Watt University Pablo Castro-Marin/Heriot-Watt University Ian Davidson/University of Southampton Natalie Wheeler/University of Southampton Francesco Poletti/University of Southampton David Richardson/University of Southampton Derryck Reid/Heriot-Watt University

An ultra-high sensitive trace gas sensing method based on quartz-enhanced photothermal spectroscopy (QEPTS) with significant advantages of standoff and remote sensing ability will be reported.

Authors:Yufei Ma/Harbin Institute of Technology Yinqiu Hu/Harbin Institute of Technology Shunda Qiao/Harbin Institute of Technology Ying He/Harbin Institute of Technology Frank Tittel/Rice University

TBD

Authors:Ayelet Uzan/Weizmann Institute of Science

With our experiment we demonstrate all-optical control of magnetization in a ferromagnet with an unprecedented sub-femtosecond time resolution. The reported results open the doors to a new generation of spintronic devices with petahertz clock-rates

Authors:Julia Gessner/Max Planck Institute of Quantum Optics Florian Siegrist/Max Planck Institute of Quantum Optics Marcus Ossiander/Max Planck Institute of Quantum Optics Christian Denker/Universität Greifswald Yi-Ping Chang/Max Planck Institute of Quantum Optics Malte Schröder/Max Planck Institute of Quantum Optics Alexander Guggenmos/Max Planck Institute of Quantum Optics Yang Cui/Max Planck Institute of Quantum Optics Jakob Walowski/Universität Greifswald Ulrike Martens/Universität Greifswald J.K. Dewhurst/Max-Planck-Institute of Microstructure Physics Ulf Kleineberg/Max Planck Institute of Quantum Optics Markus Münzenberg/Universität Greifswald Sangeeta Sharma/Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy Martin Schultze/Technische Universität Graz

We demonstrate an attosecond one-photon photoconductive switch by injecting conduction band carriers in dielectrics using vacuum-ultraviolet light pulses. Femtosecond pulse-driven currents reveal intra- and inter-band conduction band carrier dynamics.

Authors:Marcus Ossiander/Max-Planck-Institut fur Quantenoptik Keyhan Golyari/Max-Planck-Institut fur Quantenoptik Kevin Scharl/Max-Planck-Institut fur Quantenoptik Lukas Lehnert/Max-Planck-Institut fur Quantenoptik Florian Siegrist/Max-Planck-Institut fur Quantenoptik Dmitry Zimin/Max-Planck-Institut fur Quantenoptik Matthew Weidman/Max-Planck-Institut fur Quantenoptik Isabella Floss/Vienna University of Technology Valerie Smejkal/Vienna University of Technology Christoph Lemell/Vienna University of Technology Joachim Burgdörfer/Vienna University of Technology Ferenc Krausz/Max-Planck-Institut fur Quantenoptik Martin Schultze/Graz University of Technology

Efficient generation of even and odd high harmonics from a resonant large-gap semiconductor metasurface interacting with femtosecond mid-infrared pulses is reported.

Authors:Maxim Shcherbakov/Cornell University Haizhong Zhang/A*STAR (Agency for Science, Technology and Research) Michael Tripepi/The Ohio State University Noah Talisa/The Ohio State University Abdallah AlShafey/The Ohio State University Giovanni Sartorello/Cornell University Zhiyuan Fan/Cornell University Justin Twardowski/The Ohio State University Leonid Krivitsky/A*STAR (Agency for Science, Technology and Research) Arseniy Kuznetsov/A*STAR (Agency for Science, Technology and Research) Enam Chowdhury/The Ohio State University Gennady Shvets/Cornell University

We firstly observe HHG in GaSe with two-orthogonally polarized laser fields, and provide the selection rule for frequency-mixing deformed by strongly driven carriers, leading to new technologies for waveform synthesis of high-order harmonics.

Authors:Hideki Hirori/Kyoto University Yasuyuki Sanari/Kyoto University Tomohito Otobe/National Institutes for Quantum and Radiological Science and Technology Yoshihiko Kanemitsu/Kyoto University

We show that the ellipticity dependence of harmonic generation from graphene is a function of its Fermi energy. This allows for the yield and output ellipticity to be readily tuned via electrostatic gating.

Authors:Jared Ginsberg/Columbia University M. Jadidi/Columbia University Brian Lee/Columbia University Sang Chae/Columbia University Cecilia Chen/Columbia University Gauri Patwardhan/Columbia University James Hone/Columbia University Michal Lipson/Columbia University Alexander Gaeta/Columbia University

A robust energy scaling method for infrared pulses using a dual-chirped optical parametric amplification is presented. TW mid-infrared pulses enable generation of a nano-joule level water window high-order harmonic beam.

Authors:Eiji Takahashi/RIKEN

We present a frequency comb with 6.7 W at 2.9 μm with carrier-envelope phase stable pulses. To our knowledge, this is the highest power such comb reported to date.

Authors:Jay Rutledge/Stony Brook University Anthony Catanese/Stony Brook University Myles Silfies/Stony Brook University Xinlong Li/Stony Brook University Henry Timmers/National Institute of Standards Abijith Kowligy/National Institute of Standards Alexander Lind/National Institute of Standards Scott Diddams/National Institute of Standards Thomas Allison/Stony Brook University

We present a Tm:fiber amplifier emitting octave-spanning 10 fs pulses centered at 1920 nm at 100 MHz repetition rate. Intra-pulse difference frequency generation in GaAs and GaP yields spectra beyond 7 µm .

Authors:Sida Xing/NIST Abijith Kowligy/NIST Daniel Lesko/NIST Alexander Lind/NIST Peter Schunemann/BAE Systems Scott Diddams/NIST

We generate 3-11.6μm tunable mid-IR pulses by mixing outputs of a broadband 2μm NOPA and a narrowband tunable OPA, pumped by an Yb-doped 2mJ, 10kHz femtosecond laser. FWHM bandwidths up to >600cm-1 and multi-μJ pulse energies are achieved.

Authors:Rimantas Budriunas/Light Conversion, Ltd. Karolis Jurkus/Light Conversion, Ltd. Arûnas Varanavičius/Vilnius University Laser Research Center Darius Gadonas/Light Conversion, Ltd.

We report a four stage optical parametric chirped pulse amplifier which generates
femtosecond pulses at a central wavelength of 3 mm with the bandwidth of 490 nm
and the energy of 430 mJ per pulse.

Authors:Alexander Tarasevitch/University of Duisburg-Essen

In this paper we present a picosecond Front End developed for an OPCPA based new PW system for the Vulcan Laser Facility. The system delivers 22fs pulses with 1.3mJ pulse energy at 100Hz repetition rate.

Authors:Giedre Archipovaite/Central Laser Facility, STFC Mario Galletti/Central Laser Facility, STFC Munadi Ahmad/Central Laser Facility, STFC Steve Blake/Central Laser Facility, STFC Nicola Booth/Central Laser Facility, STFC Oleg Chekhlov/Central Laser Facility, STFC Rob Clarke/Central Laser Facility, STFC Marco Galimberti/Central Laser Facility, STFC Ian Musgrave/Central Laser Facility, STFC Dave Neely/Central Laser Facility, STFC Pedro Oliveira/Central Laser Facility, STFC Waseem Shaikh/Central Laser Facility, STFC Trevor Winstone/Central Laser Facility, STFC Brian Wyborn/Central Laser Facility, STFC Cristina Hernandez-Gomez/Central Laser Facility, STFC John Collier/Central Laser Facility, STFC

A high-power optical parametric chirped-pulse amplifier (OPCPA) at 1.45 – 2.40 μm wavelength, pumped by Yb-based solid-state lasers with average power scalability up to 100 W and pulse durations in the few-cycle regime is presented.

Authors:Jan-Heye Buss/Class 5 Photonics GmbH Ivanka Grguras/Class 5 Photonics GmbH Torsten Golz/Class 5 Photonics GmbH Mark Prandolini/Class 5 Photonics GmbH Michael Schulz/Class 5 Photonics GmbH Robert Riedel/Class 5 Photonics GmbH

We present a nanophotonic device capable of displaying non-trivial topology in thermal emission. By coupling the horizontal and vertical modes of two resonators with large loss asymmetry, exceptional lines are observed in parameter space.

Authors:Chloe Doiron/Rice University Gururaj Naik/Rice University

We study highly confined plasmons in individual single-walled carbon nanotube nanoantennas in the mid-infrared regime. This work paves the way for extreme light-matter interactions at the nanoscale and quantum plasmonics.

Authors:Shangjie Yu/Stanford University John Roberts/Stanford University Qing Lin/Stanford University Stephanie Bohaichuk/Stanford University Yue Luo/Harvard University Yi Taek Choi/Gwangju Institute of Science and Technology Po-Hsun Ho/Stanford University Kayoung Lee/Gwangju Institute of Science and Technology Abram Falk/IBM T.J. Watson Research Center William Wilson/Harvard University Eric Pop/Stanford University H.-S. Philip Wong/Stanford University Jonathan Fan/Stanford University

We analyze nonreciprocal radiative heat transfer in two-body planar systems, identify unique nonreciprocal effects, introduce the constraint from the second law of thermodynamics and reciprocity and demonstrate numerically our findings with magneto-optical materials.

Authors:Lingling Fan/Stanford University Yu Guo/Stanford University Georgia Papadakis/Stanford University Bo Zhao/Stanford University Zhexin zhao/Stanford University Siddharth Buddhiraju/Stanford University Meir Orenstein/Stanford University Shanhui Fan/Stanford University

Single sensor-based, one-shot multispectral imaging beyond the visible region is rapidly emerging. We present a multispectral filter array in thermal wavelengths using aluminum infrared plasmonics on germanium substrate and illustrate its spectral performance.

Authors:Noor-E-Karishma Shaik/The University of Melbourne Luke Weston/The University of Melbourne Ampalavanapillai Nirmalathas/The University of Melbourne Ranjith R Unnithan/The University of Melbourne

We show that nanophotonic resonators made from self-assembled aligned carbon nanotubes support multiple resonant modes in the mid-infrared resulting in broadband extinction from 2.5-10μm. We study these modes using far-field spectroscopy, simulations, and near-field imaging.

Authors:John Roberts/Stanford University Po-Hsun Ho/Stanford University Shangjie Yu/Stanford University Stefan Schoeche/J.A. Woollam Co., Inc. Yue Luo/Harvard University William Wilson/Harvard University Abram Falk/IBM T.J. Watson Research Center Jonathan Fan/Stanford University

We report bounds on angle-integrated absorption, scattering and far- and near-field radiative emission, capturing both per-volume material limits and geometric effects. We then describe potential extensions of this formalism to a variety of electromagnetic phenomena.

Authors:Sean Molesky/Princeton University Prashanth Venkataram/Princeton University Weiliang Jin/Stanford University Pengning Chao/Princeton University Alejandro Rodriguez/Princeton University

We experimentally demonstrate a phonon mediated infrared metamaterial emitters with multifunctional information encoding, display, and hiding with resolution up to the diffraction limit. Multiplexed polarized grayscale patterns can also be encoded in the same region.

Authors:Junyu Li/Huazhong Univ. of Science and Technology Fei Yi/Huazhong Univ. of Science and Technology

We present a coupled-mode theory and a computational formalism to describe thermal radiation from time-modulated systems. We show that such modulation results in an active cooling mechanism with high thermodynamic performance approaching the Carnot limit.

Authors:Siddharth Buddhiraju/Stanford University Wei Li/Stanford University Shanhui Fan/Stanford University

We developed Coherent Frequency Shift Keying and Hybrid Frequency-Phase Shift Keying protocols optimized for quantum measurement. Paired with our new quantum receiver, these protocols experimentally demonstrate the record energy efficiency and improve communication channel capacity.

Authors:Ivan Burenkov/University of Maryland M.V. Jabir/NIST N. Fajar R. Annafianto/NIST Abdella Battou/NIST Sergey Polyakov/NIST

We demonstrate a simple scheme for generating certifiable quantum random numbers where every.0.12s we certify enough entropy to generate a block of 8192 random bits with a certified error bounded by 10^-20. It can be run continuously and is suited as a quantum randomness beacon.

Authors:Yanbao Zhang/NTT Basic Research Laboratories Hsin Pin Lo/NTT Basic Research Laboratories Takuya Ikuta/NTT Basic Research Laboratories Toshimori Honjo/NTT Basic Research Laboratories Hiroki Takesue/NTT Basic Research Laboratories William Munro/NTT Basic Research Laboratories

We generate arbitrary 1-dimensional spatial profiles in a laser pulse by mapping the temporal electrical waveform sent to an acousto-optic modulator (AOM). The AOM can be therefore used as a spatial light modulator with 50 um pixel pitch, fast refresh rate, and high damage threshold.

Authors:Boris Braverman/University of Ottawa Xialin Liu/University of Ottawa Robert Boyd/University of Ottawa

Based on the recent achievement of strong coupling between a single ion and a single photon in a cylindrical trap, an ongoing work to extend it to linear traps and photonic interconnects is reported.

Authors:Hiroki Takahashi/Okinawa Institute of Science and Technology Graduate University

Using a polarization diversity phase modulator, we carry out projective measurements in the spectral domain to characterize frequency-bin entanglement in a hyperentangled photon pair without degrading nonclassical correlations in polarization state.

Authors:Navin Lingaraju/Purdue University Nathan O'Malley/Purdue University Daniel Jones/U.S. Army Research Laboratory Oscar Sandoval/Purdue University Hana Azzouz/Purdue University Daniel Leaird/Purdue University Joseph Lukens/Oak Ridge National Laboratory Michael Brodsky/U.S. Army Research Laboratory Andrew Weiner/Purdue University

We propose a novel technique for entanglement of microwave and optical fields using capacitor loaded with graphene waveguide. The proposed technique utilizes the graphene conductivity to realize an off-resonant interaction and achieve a tunable entanglement.

Authors:Montasir Qasymeh/Abu Dhabi University Hichem Eleuch/Abu Dhabi University

The generation of non-classical light on-chip is of key importance for quantum technologies based on photons. Here I discuss the generation of different quantum states of light produced by CMOS compatible Silicon Nitride integrated cavities.

Authors:Alberto Politi/University of Southampton

We demonstrate a wideband and tunable millimeter-wave synthesizer, using microcomb photomixing. For example, we generate a 150.8 GHz signal with Allan deviation of ~3×10^-12/s. Our microcomb system supports a continuous range of 0.05–1 THz.

Authors:Jizhao Zang/National Institute of Standards and Technology Travis Briles/National Institute of Standards and Technology Jesse Morgan/University of Virginia Andreas Beling/University of Virginia Scott Papp/National Institute of Standards and Technology

We demonstrate an efficient RF photonics filter based on AlGaAs-on-insulator integrated comb. With a record low on-chip pumping power of ~20 mW, the reconfigurable filter achieves a main-to-secondary sidelobe ratio of > 25 dB.

Authors:Haowen Shu/Peking University yuansheng tao/Peking University weiqiang xie/university of california santa barbara Lin Chang/university of california santa barbara warren jin/university of california santa barbara jiangrui deng/Peking University ming jin/Peking University Xingjun Wang/Peking University John Bowers/university of california santa barbara

Here we study the bounded states in the continuum (BICs) based microlasers in microcavity. With the assistance of BICs, the trade-off between ultrahigh speed and ultralow energy consumption can be broken for the first time.

Authors:Qinghai Song/Harbin Institute of Technology Shumin Xiao/Harbin Institute of Technology

Semiconductor heterostructures capable of producing a broadband gain in the short-wavelength
(UV-purple-blue) spectrum for light emitters and detectors have been designed and
experimentally studied.

Authors:Kunook Chung/University of Michigan Ayush Panday/University of Michigan Tuba Sarwar/University of Michigan Anthony Aiello/University of Michigan Zetian Mi/University of Michigan Pallab Bhattacharya/University of Michigan Pei-Cheng Ku/University of Michigan

This paper reports the observation of 26 GHz self-pulsing in a subwavelength grating metamaterial ring resonator refilled with DDMEBT, which is the fastest self-pulsing that has been reported according to the authors’ best knowledge.

Authors:Xiaochuan Xu/Harbin Institute of Technology, Shenzhen Yang Wang/Tokyo Institute of Technology Jiaxin Chen/Harbin Institute of Technology, Shenzhen Wanxin Li/Harbin Institute of Technology, Shenzhen Yaguo Wang/The University of Texas at Austin Yong Yao/Harbin Institute of Technology, Shenzhen Tsuyoshi Michinobu/Tokyo Institute of Technology Ray Chen/The University of Texas at Austin

We demonstrate photonic integrated circuit (PIC) based beam combining methods for future direct diode laser systems. Both coherent and wavelength beam combining are realized through hybrid integration of gain chips with PICs.

Authors:Siwei Zeng/Clemson University Yeyu Zhu/Clemson University Xiao-Lei Zhao/Clemson University Ying Wu/Clemson University Lance Sweatt/Clemson University Lin Zhu/Clemson University

Based on integrated silicon platform, we propose and fabricate a high-efficiency broadband vortex beam generator by introducing a metal mirror. The device provides potential applications in multidimensional optical communications to increase information capacity.

Authors:Heyun Tan/Sun Yat-sun University Yuntao Zhu/Sun Yat-sun University Nan Zhou/Huazhong University of Science and Technology Jian Wang/Huazhong University of Science and Technology Xinlun Cai/Sun Yat-sun University

Spectral shaping of ultrafast laser pulses in the 3.6–3.9-µm wavelength region is implemented using a CaF₂-windowed digital micromirror device. Low-pass, high-pass, band-pass and multi-wavelength shaping is demonstrated, enabling applications in spectroscopy and compressive sensing.

Authors:Marius Rutkauskas/Heriot-Watt University Anchit Srivastava/Heriot-Watt University Derryck Reid/Heriot-Watt University

We report Ge₂₃Sb₇S₇₀ chalcogenide wedge resonators with a high quality factor and broadband dispersion which is induced by an exceedingly smooth and varying-angle wedge surface.

Authors:Kyuyoung Bae/CU Boulder Thomas Horning/CU Boulder Steven Pampel/CU Boulder Mo Zohrabi/CU Boulder Michael Grayson/CU Boulder Juliet Gopinath/CU Boulder Wounjhang Park/CU Boulder

High efficiency moiré chirped Bragg gratings with ultranarrow bandwidths are fabricated in Photo-Thermo-Refractive glass. Application of those filters for signal processing and laser design is discussed.

Authors:Vadim Smirnov/OptiGrate Corp Paul Ramos/OptiGrate Corp Ruslan Vasilyeu/OptiGrate Corp Alexei Glebov/OptiGrate Corp

We designed and demonstrated optical limiters that incorporate thin-film vanadium dioxide into metallic frequency selective surfaces and feature large, broadband off-state transmittance, small on-state transmittance, and minimized absorption.

Authors:Chenghao Wan/University of Wisconsin-Madison Zhen Zhang/Purdue University Jad Salman/University of Wisconsin-Madison Yuzhe Xiao/University of Wisconsin-Madison ZHAONING YU/University of Wisconsin-Madison Alireza Shahsafi/University of Wisconsin-Madison Shriram Ramanathan/Purdue University Mikhail Kats/University of Wisconsin-Madison

We report a highly linear and sensitive power detector, which is based on a silicon-cantilever enhanced photoacoustic sensor. Broadband operation from visible to mid-infrared is demonstrated, and extension to THz is envisioned.

Authors:Jussi Rossi/Tampere University Juho Uotila/Gasera Ltd. Toni Laurila/Aalto University Erkki Ikonen/Aalto University Markku Vainio/University of Helsinki

We present a high resolution optical rotary dispersion spectrometer that can detect spectral bandwidth with high sensitivity (< 1 pm) by exploiting the induced optical activity of OAM fiber modes.

Authors:Aaron Peterson-Greenberg/Boston University Gautam Prabhakar/Boston University Siddharth Ramachandran/Boston University

Monochromated electron energy-loss spectroscopy (EELS) can now reach the mid-infrared spectral regime in the electron microscope. Here, we use monochromated EELS to examine geometry and coupling effects for infrared excitations in complex nanostructures.

Authors:Jordan Hachtel/Oak Ridge National Laboratory Andrea Konecna/Institut de Ciencies Fotoniques Kevin Roccapriore/Oak Ridge National Laboratory Shin Hum Cho/University of Texas at Austin Delia Milliron/University of Texas at Austin F. Javier García de Abajo/Institut de Ciencies Fotoniques Juan Carlos Idrobo/Oak Ridge National Laboratory

Here, to the best of our knowledge for the first time, we introduce nanofabrication capability into the bulk of silicon wafers. We exploit Bessel beams, and demonstrate “in-chip” nano-structuring with features down to 250 nm.

Authors:Aqiq Ishraq/Bilkent Universitesi Rana Asgari Sabet/Bilkent Universitesi Onur Tokel/Bilkent Universitesi

In this work, we experimentally demonstrate coupling between free-space light and surface plasmon and epsilon-near-zero modes on Ag grating metasurfaces.

Authors:Milan Palei/University of Notre Dame John Haug/University of Notre Dame Joshua Shrout/University of Notre Dame Paul Bohn/University of Notre Dame Anthony Hoffman/University of Notre Dame

New approaches are needed to prototype heterogeneous 3D photonic materials and devices with 100 nm or smaller feature sizes. We demonstrate that optical tweezers can provide the necessary speed and positioning accuracy for rapid prototyping.

Authors:Euan McLeod/University of Arizona Jeffrey Melzer/University of Arizona

We present a new approach based on machine learning algorithms for inverse design of photonic nanostructure to provide the desired response while iteratively reducing the complexity of the structure to minimize the design complexity.

Authors:Mohammadreza Zandehshahvar/Georgia Institute of Technology Yashar Kiarashinejad/Georgia Institute of Technology Omid Hemmatyar/Georgia Institute of Technology Sajjad Abdollahramezani/Georgia Institute of Technology Reza Pourabolghasem/Independent Researcher Ali Adibi/Georgia Institute of Technology

This talk will describe fundamental studies of optical phenomena at the nanoscale. Such phenomena can be used for applications, including nanomanufacturing, nanoscale processing, and ultra-high density, next generation data storage.
Xianfan Xu is James J. and Carol L. Shuttleworth Professor of Mechanical Engineering at Purdue University. He obtained Ph.D. degree from UC Berkeley. His research is focused on ultrafast and nanoscale optics. He is Fellow of ASME, SPIE, and OSA, and an Associated Editor for Scientific Reports and Optics Express.

Authors:Xianfan Xu/Purdue University

We present the first observation of the quantum nature of the Cherenkov effect, by phase-matching light & electron waves. Interacting coherently along hundreds of microns, each electron simultaneously absorbs and emits hundreds of photon quanta.

Authors:Raphael Dahan/Technion saar nehemia/Technion Michael Shentcis/Technion Ori Reinhardt/Technion yuval adiv/Technion Kangpeng Wang/Technion orr be'er/Technion Yaniv Kurman/Technion Xihang Shi/Technion Morgan Lynch/Technion Ido Kaminer/Technion

We demonstrate single-pass optical parametric amplification (OPA) in monolayer transition-metal dichalcogenides. Our experimental findings of OPA efficiency and polarization dependence are fully supported by first-principle calculations of the nonlinear response within a tight-binding model.

Authors:Chiara Trovatello/Politecnico di Milano Andrea Marini/University of L'Aquila Xinyi Xu/Columbia University Changhwan Lee/Columbia University Fang Liu/Columbia University Cristian Manzoni/IFN-CNR Stefano Dal Conte/Politecnico di Milano Alessandro Ciattoni/CNR-SPIN Kaiyuan Yao/Columbia University Xiaoyang Zhu/Columbia University P. James Schuck/Columbia University Giulio Cerullo/Politecnico di Milano

We demonstrate the ultrafast conversion of statically passive dielectrics (e.g., amorphous TiO₂) to transient second-order nonlinear media upon the sub-picosecond transfer of hot electrons, enabling active control of second-order optical processes.

Authors:Mohammad Taghinejad/Georgia Institute of Technology Zihao Xu/Emory University Kyutae Lee/Georgia Institute of Technology Tianquan Lian/Emory University Wenshan Cai/Georgia Institute of Technology

We present novel radiation emission by free electrons moving in a spatiotemporally modulated medium, which in specific cases acts as a photonic time crystal. We observe two regimes of radiation, subluminal and superluminal.

Authors:Alex Dikopoltsev/Technion Yonatan Sharabi/Technion Shai Tsesses/Technion Ido Kaminer/Technion Mordechai Segev/Technion

We demonstrate large second harmonic generation from the polar van der Waals semiconductors BiTeI and BiTeBr, with responses comparable to leading semiconducting nonlinear optical (NLO) materials. This highlights their promise for nanoscale NLO applications.

Authors:Prashant Padmanabhan/Los Alamos National Laboratory Kevin Kwock/Columbia University Samuel Gilinsky/Northern Arizona University Nicholas Sirica/Los Alamos National Laboratory Jaewook Kim/Rutgers University Kai Du/Rutgers University Sang-Wook Cheong/Rutgers University Rohit Prasankumar/Los Alamos National Laboratory

We show how quantum wave-shaping of electron beams can selectively enhance and inhibit spectral features in free-electron radiation, resulting for instance in enhanced monochromaticity of emitted photons from electrons in a magnetic nano-undulator.

Authors:Liang Jie Wong/Nanyang Technological University Nicholas Rivera/Massachusetts Institute of Technology Chitraang Murdia/Massachusetts Institute of Technology Thomas Christensen/Massachusetts Institute of Technology John Joannopoulos/Massachusetts Institute of Technology Marin Soljacic/Massachusetts Institute of Technology Ido Kaminer/Technion

We present the first observation of energy-tunable X-ray radiation from van-der-Waals materials. Tunability is achieved by control of the incident electron energy and lattice structure - towards a new designer concept for novel X-ray sources.

Authors:Michael Shentcis/Technion – Israel Institute of Technology Adam Budniak/Technion – Israel Institute of Technology Raphael Dahan/Technion – Israel Institute of Technology Yaniv Kurman/Technion – Israel Institute of Technology Xihang Shi/Technion – Israel Institute of Technology Michael Kalina/Technion – Israel Institute of Technology Hanan Sheinfux/ICFO–Institut de Ciencies Fotoniques Mark Blei/Arizona State University Mark Svendsen/Technical University of Denmark Yaron Amouyal/Technion – Israel Institute of Technology Frank Koppens/ICFO–Institut de Ciencies Fotoniques Sefaattin Tongay/Arizona State University Kristian Thygesen/Technical University of Denmark Efrat Lifshitz/Technion – Israel Institute of Technology Javier de Abajo/ICFO–Institut de Ciencies Fotoniques Liang Wong/Nanyang Technological University Ido Kaminer/Technion – Israel Institute of Technology

We demonstrate metasurfaces consisting of meta-atoms that generate spatial-mode entangled photons with different polarization, designed through careful FDTD simulations. Using our biphoton comb setup, these metasurfaces will enable for testing spatial-energy-time hyperentanglement.

Authors:Hyunpil Boo/University of California, Los Angeles Yoo Seung Lee/University of California, Los Angeles Hangbo Yang/University of California, Los Angeles KAI-CHI CHANG/University of California, Los Angeles Chee Wei Wong/University of California, Los Angeles

We report broadband second-harmonic generation based on Stark-tunable intersubband nonlinearities in multiple-quantum-well structures combined with plasmonic nanoresonators. Experimentally, 0.75 μm of the second-harmonic generation spectral peak tuning around pump wavelength of 9.8 μm was achieved.

Authors:Jaeyeon Yu/UNIST InYong Hwang/UNIST Daeik Kim/UNIST Frederic Demmerle/Technische Universitat Munchen Gerhard Boehm/Technische Universitat Munchen Markus-Christian Amann/Technische Universitat Munchen Mikhail Belkin/Technische Universitat Munchen Jongwon Lee/UNIST

The use of hybrid, plasmonic-photonic meta-structures and machine learning to optimize light-matter coupling and speed-up quantum processes to THz-rates so that they outpace quantum decoherence and losses at room temperature will be discussed.

Authors:Vladimir Shalaev/Purdue University/Birck Nanotechnology Alexandra Boltasseva/Purdue University/Birck Nanotechnology Alexander Kildishev/Purdue University/Birck Nanotechnology Zhaxylyk Kudyshev/Purdue University/Birck Nanotechnology Simeon Bogdanov/Purdue University/Birck Nanotechnology

We design and experimentally demonstrate ultra-small mode volume hyperbolic metamaterial nano cavities in the visible frequency band. These HMM cavities show enhancement of light-matter interaction with 2D TMDC materials in the deep subwavelength limit.

Authors:SITA RAMA KRISHNA INDUKURI/Hebrew university of Jerusalem. Christian Frydendahl/Hebrew university of Jerusalem. Jonathan Bar-David/Hebrew university of Jerusalem. Noa Mazurski/Hebrew university of Jerusalem. Uriel Levy/Hebrew university of Jerusalem.

We use inverse design to construct immersion metalenses for photon collection from quantum emitters. We push the limits of efficient, ultrahigh-NA, achromatic metalenses and move towards a compact, scalable platform for interfacing quantum photonic devices.

Authors:Amelia Klein/University of Pennsylvania Nader Engheta/University of Pennsylvania Lee Bassett/University of Pennsylvania

We experimentally demonstrate a metasurface that supports tailorable polaritons arising from strong coupling between Mie modes of dielectric nanoresonators and intersubband transitions of semiconductor quantum wells that are embedded inside the resonator.

Authors:Raktim Sarma/Sandia National Labs Nishant Nookala/University of Texas at Austin Kevin Reilly/University of New Mexico Sheng Liu/Sandia National Labs Domenico de Ceglia/University of Padova Michael Goldflam/Sandia National Labs Luca Carletti/University of Padova Salvadore Campione/Sandia National Labs John Klem/Sandia National Labs Michael Sinclair/Sandia National Labs Mikhail Belkin/University of Texas at Austin Igal Brener/Sandia National Labs

We report a design of an all-dielectric Mie-resonant active metasurface, which exhibits a high reflectance (>45%) and a broad tunable phase shift at an operation wavelength of 1550 nm. The proposed design can be used for the realization of two-dimensional active metasurfaces.

Authors:Meir Grajower/California Institute of Technology, Pasadena Ruzan Sokhoyan/California Institute of Technology, Pasadena Pin Chieh Wu/California Institute of Technology, Pasadena Ghazaleh Shirmanesh/California Institute of Technology, Pasadena Souvik Biswas/California Institute of Technology, Pasadena Harry Atwater/California Institute of Technology, Pasadena

We experimentally demonstrate a tunable external cavity laser based on a metasurface. The metasurface focuses light back on the facet of a diode laser, and the emission wavelength can be tuned by moving the metasurface.

Authors:Christina Spaegele/Harvard University Michele Tamagnone/Harvard University Dmitry Kazakov/Harvard University Marco Piccardo/Harvard University Federico Capasso/Harvard University

We present an apodised grating converter capable to couple a waveguide single-mode to a surface-normal collimated Gaussian beam in free space. Mode conversion proceeds via coupling to a spatially-broad standing-wave resonance supported inside the grating.

Authors:Alexander Yulaev/University of Maryland/PML-NIST Daron Westly/NIST Vladimir Aksyuk/NIST

To achieve optical access between silicon gyroscope chip and fiber sensing coil, we experimentally demonstrate grating coupler with asymmetric trenches on silicon-on-insulator with -4 dB coupling efficiency, 40.5 nm bandwidth, and -32.9 dB interface reflection.

Authors:Yin-Hsuan Lee/National Sun Yat-sen University Tzu-Hsiang Yen/National Sun Yat-sen University Ren-Young Liu/National Sun Yat-sen University Chun-Ta Wang Wang/National Sun Yat-sen University Yi-Jen Chiu/National Sun Yat-sen University Yung-Jr Hung/National Sun Yat-sen University

We present an inverse design method making waveguides with high performance and high robustness to fabrication errors. As an example, we show a 1-to-4 mode converter with > −1.5 dB conversion efficiency under geometric variations within fabrication tolerances.

Authors:Ziwei Zhu/Columbia University Utsav Dave/Columbia University Michal Lipson/Columbia University Changxi Zheng/Columbia University

By utilizing random localization patterns as training data for machine learning, we achieved a 0.2-nm wavelength resolution with a fabricated photonic crystal wavemeter, which greatly exceeds the limit imposed by the fabrication.

Authors:Jocelyn Hofs/Keio University Takumasa Kodama/Keio University Shengji Jin/Keio University Takasumi Tanabe/Keio University

We design and demonstrate an OAM mode demultiplexer based on a novel transmissive multi-plane light conversion scheme and fabricated on two glass plates with double-sided patterns. 7 OAM modes are supported across the C-band.

Authors:Zhongzheng Lin/Sun Yat-Sen University Yuanhui Wen/Sun Yat-Sen University Yujie Chen/Sun Yat-Sen University Siyuan Yu/Sun Yat-Sen University

The CMOS-compatible flat optics fabrication platforms developed within the Institute of Microelectronics (IME) for multi-purpose wafers have been presented. The work aims to drive the flat optics towards the mass-manufacturing and commercialization.

Authors:Nanxi Li/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Zhengji Xu/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Yuan Dong/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Ting Hu/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Qize Zhong/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Yuan Hsing Fu/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Shiyang Zhu/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Navab Singh/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research)

Dielectric nanoantennas represent a low-loss alternative to plasmonics bringing nanophotonic concepts to real-world applications. Here, I will discuss high-resolution spatial light modulators and directional nanolasers based on active and tunable dielectric nanoantennas and metasurfaces.

Authors:Arseniy Kuznetsov/Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research)

The fabrication challenges and application opportunities associated with the integration of novel materials at the micro- and nano-scale and prescribed positions within rigid and soft optical fibers will be presented.

Authors:Fabien Sorin/Ecole Polytechnique Federale de Lausanne

We demonstrate that light can be guided in higher azimuthal order modes with negligible loss over 100-m lengths, even at wavelengths 100-200 nm past cutoff. This has fundamental implications for the design of multimode fibers.

Authors:Zelin Ma/Boston University Poul Kristensen/OFS-Fitel Siddharth Ramachandran/Boston University

We report an Yb-doped fiber with tapered core and uniform cladding. A 364 W laser output was observed in MOPA structure. The laser slope efficiency was measured to be 71.11% and M² factor was 1.63.

Authors:Xianfeng Lin/Wuhan National Laboratory for Optoelectronics Yongshi Cheng/Wuhan National Laboratory for Optoelectronics Yibo Wang/Wuhan National Laboratory for Optoelectronics Yingbo Chu/Wuhan National Laboratory for Optoelectronics Lei Liao/Wuhan National Laboratory for Optoelectronics Jinyan Li/Wuhan National Laboratory for Optoelectronics

Nd³⁺-doped phosphate glasses and fibers were fabricated and studied for short-wavelength emission. The experimental results show that low doping level of Nd³⁺ is favorable for efficient emission below 900 nm.

Authors:Shijie Fu/The University of Arizona Xiushan Zhu/The University of Arizona Junfeng Wang/The University of Arizona Minghong Tong/The University of Arizona Jie Zong/NP Photonics Michael Li/NP Photonics Arturo Chavez/NP Photonics Nasser Peyghambarian/The University of Arizona

A broadly tunable Cr⁴⁺:YAG double-clad crystal fiber laser is demonstrated by laser diode pump with a threshold power of 55 mW. The tuning range was 170 nm centered at 1438 nm limited by excited-state absorption.

Authors:Yi-Hsun Li/National Taiwan University Yu-Chan Lin/National Taiwan University Yu-Wei Hsu/National Taiwan University Teng-I Yang/National Taiwan University Sheng-Lung Huang/National Taiwan University

We report a mid-infrared chalcogenide glass ultralarge mode area photonic crystal fiber for high power applications. Broadband mid-infrared single-mode operation and supercontinuum have been observed in the fiber with recorded mode area of 5200μm².

Authors:Xian Feng/Jiangsu Normal University He Ren/Jiangsu Normal University Sisheng Qi/Jiangsu Normal University Yongsheng Hu/Jiangsu Normal University Feng Han/Jiangsu Normal University Jindan Shi/Jiangsu Normal University Zhiyong Yang/Jiangsu Normal University

We have investigated several DUV LEDs with graded quantum wells and graded quantum barriers. We found that these unique MQW structures could remarkably improve the internal quantum efficiency, external quantum efficiency and light output power.

Authors:Huabin Yu/University of Science and Technology of China Zhongjie Ren/University of California San Diego Zhongling Liu/University of Sci. & Tech. of China Chong Xing/University of Science and Technology of China Haiding Sun/University of Sci. & Tech. of China

High internal quantum efficiency (85%) was realized from the AlGaN-delta-GaN quantum well (QW) structure grown on a conventional AlN/sapphire template by Molecular Beam Epitaxy. The peak emission wavelength is observed at 260 nm.

Authors:Cheng Liu/Rochester Institute of Technology Kevin Lee/Cornell University Galen Harden/University of Notre Dame Anthony Hoffman/University of Notre Dame Huili Grace Xing/Cornell University Debdeep Jena/Cornell University Jing Zhang/Rochester Institute of Technology

Performance of the deep-ultraviolet LEDs is improved by replacing conventional p-doped electron blocking layer with an intrinsic 2 nm thin AlGaN strip in the last quantum barrier due to enhancement of the hole transportation.

Authors:Barsha Jain/New Jersey Institute of Technology Ravi Teja Velpula/New Jersey Institute of Technology HA QUOC THANG BUI/New Jersey Institute of Technology Moses Tumuna/New Jersey Institute of Technology Jeffrey Jude/New Jersey Institute of Technology Hieu Nguyen/New Jersey Institute of Technology

High quality and wavy Al_1-xGa_xN/Al_1-yGa_yN multiple quantum wells emitting at ~280 nm was successfully grown on sapphire substrate with a misorientation angle as large as 4°. A significantly enhanced optical performance was achieved.

Authors:Haiding Sun/University of Sci. & Tech. of China

Single and two-stage self-injection locking in InGaN/GaN laser diode is presented. Near single-mode emission with 34pm linewidth, and simultaneous locking of four longitudinal modes with appreciable 18dB SMSR and <2.5dB peak power ratio is achieved.

Authors:Md. Hosne Mobarok Shamim/King Fahd University of Petroleum & Mine Tien Khee Ng/King Abdullah University of Science and Technology Boon S. Ooi/King Abdullah University of Science and Technology Mohammed Khan/King Fahd University of Petroleum & Mine

High-quality semipolar GaN is crucial in realizing high-performance optoelectronic devices and overcome quantum confined Stark effect. The green light VLC-LED achieves 667 MHz bandwidth due to a high quality and stacking-faults free semipolar epitaxial method.

Authors:Yu-Chien Hsu/National Chiao Tung University Sung-Wen Huang Chen/National Chiao Tung University Fang-Jyun Liou/National Chiao Tung University Jie Song/Saphlux Inc Joowon Choi/Saphlux Inc Jung Han/Yale University Hao-Chung Kuo/National Chiao Tung University

We report high-performance GaN avalanche photodiodes using a novel ion implanted isolation technique. The devices showed low dark current, an equivalent noise power of <10^-16 WHz^-0.5 and avalanche gain of 7×10⁵ at l = 280 nm.

Authors:Minkyu Cho/Georgia Institute of Technology Hoon Jeong/Georgia Institute of Technology Chuan-Wei Tsou/Georgia Institute of Technology Marzieh Bakhtiary-Noodeh/Georgia Institute of Technology Theeradetch Detchprohm/Georgia Institute of Technology Russell Dupuis/Georgia Institute of Technology Shyh-Chiang Shen/Georgia Institute of Technology

We present novel InGaAs/InAlAs single photon avalanche diodes with dual multiplication layers, large active diameters (240mm), high detection efficiency (32%), record small jitter (35ps), and low afterpulsing (<1% at 2ms hold-off time) at nearly 200K.

Authors:Yi-Shan Lee/National Central University Yu-Chia Chen/National Central University PING-Li WU/National Central University Jin-Wei Shi/National Central University Naseem Naseem/National Central University

AZO nanowires show lowest threshold of 0.07 W/cm² when added with 12.5 % of aluminium nitride. Threshold was at least 2 orders of magnitude lower than pure ZnO nanowires and emission was single mode.

Authors:Wan Maryam Wan Ahmad Kamil/Universiti Sains Malaysia nur fadzliana Ramli/Universiti Sains Malaysia siti Azrah Mohammad Samsuri/Universiti Sains Malaysia Si Yuan Chan/National Cheng Kung University Hsu Cheng Hsu/National Cheng Kung University Norzaini zainal/Universiti Sains Malaysia haslan abu hassan/Universiti Sains Malaysia Otto Muskens/university of southampton

We propose a parallel chaos generation by applying self-phase-modulation CW injection to external-cavity laser and phase-to-intensity conversion to CW light, and experimentally demonstrate simultaneous generation of two incoherent chaotic signals with wideband-flat-spectra and excellent complexity.

Authors:Ning Jiang/Univ of Electronic Science & Tech China Anke Zhao/Univ of Electronic Science & Tech China Shiqin Liu/Univ of Electronic Science & Tech China Yiqun Zhang/Univ of Electronic Science & Tech China Jiafa Peng/Univ of Electronic Science & Tech China Kun Qiu/Univ of Electronic Science & Tech China

TBD

Authors:Boubacar Kante/University of California Berkeley

We analyze the topological charge of photonic crystal modes that have polarization properties dictated by their non-trivial envelopes, and demonstrate experimentally their lasing operation in electrically pumped mid-infrared photonic crystal lasers with high slope efficiency.

Authors:Zhixin Wang/ETH Zurich Yong Liang/ETH Zurich Mattias Beck/ETH Zurich Giacomo Scalari/ETH Zurich Jérôme Faist/ETH Zurich

We revise the definition of the lasing threshold of metal-semiconductor nanolasers using a clear coherence definition and present an expression for the threshold current that can be applied to most thresholdless and non-thresholdless nanolasers.

Authors:Andrey Vyshnevyy/Moscow Institute of Physics & Technology Dmitry Fedyanin/Moscow Institute of Physics & Technology

We present a cavity design for broad-area semiconductor lasers that stabilizes lasing dynamics and produces directional emission. By tuning the cavity geometry, we control nonlinear interactions of the lasing modes with the gain medium.

Authors:Kyungduk Kim/Yale University Stefan Bittner/Yale University Yongquan Zeng/Nanyang Technological University Stefano Guazzotti/Imperial College Ortwin Hess/Imperial College Qijie Wang/Nanyang Technological University Hui Cao/Yale University

Fabry-Perot laser arrays based on vertical p-i-n laser diode structures grown on InP layer directly bonded to Si wafer is presented. Lasing emission covering the C+L bands is achieved by means of a single-epitaxy Selective Area Growth (SAG) technology.

Authors:Claire Besancon/III-V Lab, a joint lab of Nokia Bell Labs, Thales Research and Technology and CEA LETI Delphine Néel/III-V Lab, a joint lab of Nokia Bell Labs, Thales Research and Technology and CEA LETI Giancarlo Cerulo/III-V Lab, a joint lab of Nokia Bell Labs, Thales Research and Technology and CEA LETI Nicolas Vaissiere/III-V Lab, a joint lab of Nokia Bell Labs, Thales Research and Technology and CEA LETI Dalila Make/III-V Lab, a joint lab of Nokia Bell Labs, Thales Research and Technology and CEA LETI Karim Mekhazni/III-V Lab, a joint lab of Nokia Bell Labs, Thales Research and Technology and CEA LETI Frédéric Pommereau/III-V Lab, a joint lab of Nokia Bell Labs, Thales Research and Technology and CEA LETI Frank Fournel/Univ. Grenoble Alpes, CEA LETI Cécilia Dupré/Univ. Grenoble Alpes, CEA LETI Christophe Jany/Univ. Grenoble Alpes, CEA LETI Franck Bassani/Univ. Grenoble Alpes; CNRS, CEA LETI Minatec, LTM Sylvain David/Univ. Grenoble Alpes; CNRS, CEA LETI Minatec, LTM Thierry Baron/Univ. Grenoble Alpes; CNRS, CEA LETI Minatec, LTM

A fixed point of a bi-directional dual-comb ring laser is investigated. Using dual-comb spectroscopy we show how changes in the combs’ relative repetition and offset frequencies are correlated, giving insight into the combs’ mutual coherence.

Authors:Bachana Lomsadze/Santa Clara University Kelly Fradet/Santa Clara University Richard Arnold III/Santa Clara University

We demonstrate a fiber delay line-based direct comb-line stabilization with 6x10^-15 frequency instability whitin 1 s. Two combs could be simultaneously stabilized to a single fiber delay-line with ~1-Hz relative linewidth and ~20-Hz absolute linewidth.

Authors:Dohyeon Kwon/Korea Advanced Inst of Science & Tech Igju Jeon/Korea Advanced Inst of Science & Tech Won-Kyu Lee/Korea Research Institute of Standards and Science Myoung-Sun Heo/Korea Research Institute of Standards and Science Jungwon Kim/Korea Advanced Inst of Science & Tech

We summarize our results on the generation of temporal laser cavity-solitons in a system comprising an optical micro-cavity nested in a fiber laser. We will discuss their features, region of existence, potential and challenges ahead.

Authors:Alessia Pasquazi/University of Sussex Hualong Bao/University of Sussex Maxwell Rowley/University of Sussex Pierre-Henry Hazard/University of Sussex Luana Olivieri/University of Sussex Antonio Cutrona/University of Sussex Benjamin Wetzel/University of Sussex Luigi Di Lauro/University of Sussex Juan Sebastian Totero Gongora/University of Sussex Sai Chu/University of Sussex Brent Little/University of Sussex Gian-Luca Oppo/University of Sussex Roberto Morandotti/University of Sussex David Moss/University of Sussex Marco Peccianti/University of Sussex

We demonstrate a single-cavity dual-comb diode-pumped solid-state oscillator. A polarization-multiplexed Yb:CaF₂-based cavity outputs two beams each with >300-mW average power, 200-fs pulse duration, 137-MHz repetition rate, and highly stable repetition rate difference of 3.7-kHz.

Authors:Benjamin Willenberg/ETH Zurich Christopher Phillips/ETH Zurich Florian Koch/ETH Zurich Léonard Krüger/ETH Zurich Ursula Keller/ETH Zurich

We demonstrate dual-comb interferometry and spectroscopy with a III-V-on-silicon passively mode-locked laser of 1-GHz repetition rate and 1-THz span. We heterodyne the on-chip device with an electro-optic modulator comb for initial assessment.

Authors:Kasper Van Gasse/Ghent University-imec JEONG HYUN HUH/Max-Planck institude of Quantum Optics Zaijun Chen/Max-Planck institude of Quantum Optics Stijn Poelman/Ghent University-imec Zhechao Wang/Ghent University-imec Gunther Roelkens/Ghent University-imec Theodor Haensch/Max-Planck institude of Quantum Optics Bart Kuyken/Ghent University-imec Nathalie Picqué/Max-Planck institude of Quantum Optics

We demonstrate carrier-envelope offset frequency (f_CEO) stabilization of a modelocked laser using an integrated, dispersion engineered lithium niobate f-2f interferometer via simultaneous supercontinuum and second-harmonic generation with only 107 pJ pulse energy.

Authors:Yoshitomo Okawachi/Columbia University Mengjie Yu/Harvard University Boris Desiatov/Harvard University Bok Young Kim/Columbia University Marko Loncar/Harvard University Alexander Gaeta/Columbia University

We examine the optical pulse width and illumination spot size dependence on the flicker phase noise of a photodiode, resulting in a 10 dB noise reduction to -143/f dBc/Hz on a 1 GHz carrier.

Authors:Dahyeon Lee/University of Colorado Boulder Takuma Nakamura/National Institute of Standards and Technology Joe Campbell/University of Virginia Scott Diddams/National Institute of Standards and Technology Franklyn Quinlan/National Institute of Standards and Technology

We describe InP-based integrated narrow linewidth tunable lasers with separate electrodes for frequency modulation, fast wavelength switching, and amplification, which are uniquely suited to FMCW LIDAR, as well as complementary photonic technologies for automotive applications.

Authors:Michael Larson/Lumentum Operations Inc

TBD

Authors:Gary Hicok/NVIDIA Corporation

Lidar optical architecture employing Digital Micromirror Device provides unique features such as low mechanical inertia, a large aperture area, fast scanning speed, and a high efficiency in beam steering.

Authors:Yuzuru Takashima/University of Arizona Brandon Hellman/University of Arizona Joshua Rodriguez/University of Arizona Chuan Luo/University of Arizona Young-sik Kim/University of Arizona Jae-Hyeung Park/Inha University

Photonic accelerator is optimized to perform specific functions placed at frontend, which does so faster with less power consumption than electronic counterparts. We will introduce its concept and discuss the challenges and promising use cases.

Authors:Ken-ichi Kitayama/Grad Sch Creation of New Photonics Ind

Interest in optical hardware for the implementation of neural networks has been revived recently with the advent of new optoelctronics technologies and the large increse in the size of neural networks that are being implemented or contemplated. At the same time, digitally implemented neural networks are increasingly being used to help improve the performane of optical systems. We will compare these two emerging trends and discuss how they might possibly merge in the future.

Authors:Demetri Psaltis/Ecole Polytechnique Federale de Lausanne

We discuss some of our recent works on photonic neural network, focusing in particular on concepts for introducting nonlinearity and for training. We also discuss efforts in constructing recurrent neural networks based on wave physics.

Authors:Shanhui Fan/Stanford University

We have proposed a superconducting opto-electronic platform for neuromorphic computing utilizing semiconductor light sources coupled to integrated waveguides for communication, and superconducting detectors and electronics for efficient computation. Here we summarize the recent experimental progress.

Authors:Sonia Buckley/National Inst of Standards & Technology Jeffrey Chiles/National Inst of Standards & Technology Alexander Tait/National Inst of Standards & Technology Adam McCaughan/National Inst of Standards & Technology Sae Woo Nam/National Inst of Standards & Technology Richard Mirin/National Inst of Standards & Technology Jeffrey Shainline/National Inst of Standards & Technology

Relativistic harmonic generation is a waveform-dependent process that can be enhanced by multi-color driving pulses. We experimentally demonstrate higher-efficiency harmonics from a plasma mirror cascade, where an initial plasma mirror produces the multi-color beam.

Authors:Matthew Edwards/Princeton University Nicholas Fasano/Princeton University Eric Lepowsky/Princeton University Andreas Giakas/Princeton University Timothy Bennett/Princeton University Julia Mikhailova/Princeton University

We measure fundamental, second, and third harmonics of nonlinear Thomson scattering emitted by free electrons out the side of a laser focus with 10¹⁸W/cm². The redshifted photons show distinct spatial patterns when resolved by polarization.

Authors:Justin Peatross/Brigham Young University Nic Atkinson/Brigham Young University Daniel Hodge/Brigham Young University Brittni Pratt/Brigham Young University Mahonri Romero/Brigham Young University Christoph Schulzke/Brigham Young University Michael Ware/Brigham Young University

Long wave infrared (LWIR) filamentation enables long range channeling of higher peak power beams before modulation and breakup. We present self-consistent modeling of the effect of avalanche ionization on LWIR filamentation, consistent with recent experiments.

Authors:Daniel Woodbury/University of Maryland at College Park Robert Schwartz/University of Maryland at College Park Josh Isaacs/US Naval Research Laboratory Howard Milchberg/University of Maryland at College Park

Using a streak camera, we measure
the spatial profile of fluorescence emission of from a filament in air. The delay is inversely proportional to the density of the excited states contributing in collective emission.

Authors:Ladan Arissian/National Research Council Canada Ali Rastegari/University of New Mexico Brian Kamer/University of New Mexico

Using a laser-induced fluorescence depletion technique, we measure the formation dynamics of the excited neutral nitrogen molecules inside filaments. Our results suggest that the excitation of neutral N₂ occurs via collisions with energetic free electrons.

Authors:Xiang Zhang/Univ. of Shanghai for Sci. and Tech. Rostyslav Danylo/Univ. of Shanghai for Sci. and Tech. Zhengquan Fan/Univ. of Shanghai for Sci. and Tech. Dongjie Zhou/Univ. of Shanghai for Sci. and Tech. Qi Lu/Univ. of Shanghai for Sci. and Tech. Bin Zhou/Univ. of Shanghai for Sci. and Tech. Qingqing Liang/Univ. of Shanghai for Sci. and Tech. Songlin Zhuang/Univ. of Shanghai for Sci. and Tech. Aurelien Houard/ENSTA Paris Andre Mysyrowicz/ENSTA Paris Eduardo Oliva/Universidad Politécnica de Madrid Yiu Liu/Univ. of Shanghai for Sci. and Tech.

Traditional N₂⁺ lasing experiments are limited because the pump pulse combines ionization with excitation of the gain medium. A second excitation pulse can act independent of ionization to control electronic, vibrational, and rotational dynamics.

Authors:Mathew Britton/University of Ottawa Dong Hyuk Ko/University of Ottawa Patrick Laferriere/University of Ottawa Chunmei Zhang/University of Ottawa Ladan Arissian/University of Ottawa Paul Corkum/University of Ottawa

Generation of an extreme ultraviolet continuum (33 eV to 72 eV) by a multimillijoule, few-cycle (7 fs) laser pulse produced by the Thin Film Compression technique.

Authors:Matthew Stanfield/University of California Hunter Allison/University of California Nicholas Beier/University of California Sahel Hakimi/University of California Amina Hussein/University of California Franklin Dollar/University of California

We have developed an experimental setup for ultrafast angle-resolved photoemission spectroscopy based on high-order harmonic generation from a Yb:KGW laser. Using nonlinear compression, we show that the time resolution can be improved to ~30 fs.

Authors:Yangyang Liu/University of Central Florida John Beetar/University of Central Florida Nrisimhamurty Madugula/University of Central Florida Shima Gholam Mirzaeimoghadar/University of Central Florida Md Hosen/University of Central Florida Gyanendra Dhakal/University of Central Florida Christopher Sims/University of Central Florida Marc Etienne/University of Central Florida firoza kabir/University of Central Florida Klauss Dimitri/University of Central Florida Sabin Regmi/University of Central Florida Madhab Neupane/University of Central Florida Michael Chini/University of Central Florida

In this communication, the possible routes of LIBS to reach the status of 'analytical superstar' will be discussed, with a special emphasis on the most promising applications of the technique.

Authors:Vincenzo Palleschi/Consiglio Nazionale delle Ricerche

Photoacoustic dual-comb spectroscopy is demonstrated, providing scan-free mapping of optical absorption spectra to acoustically detectable frequencies. Narrow absorption features of a low volume gas sample are resolved with high signal-to-noise ratio in short acquisition time.

Authors:Thibault Wildi/Centre Suisse d'Electronique et de Microtechnique Thibault Voumard/Centre Suisse d'Electronique et de Microtechnique Victor Brasch/Centre Suisse d'Electronique et de Microtechnique Gürkan Yilmaz/Centre Suisse d'Electronique et de Microtechnique Tobias Herr/Centre Suisse d'Electronique et de Microtechnique

We report the first high-resolution spectroscopy study of radiocarbon methane, ¹⁴CH₄. Several absorption lines of the fundamental vibrational band ν₃ were measured using a continuous-wave mid-infrared optical parametric oscillator with cantilever-enhanced photoacoustic spectroscopy.

Authors:Markku Vainio/University of Helsinki Santeri Larnimaa/University of Helsinki Juho Karhu/University of Helsinki Teemu Tomberg/University of Helsinki Guillaume Genoud/MIKES VTT Tuomas Hieta/Gasera Ltd. Markus Metsälä/University of Helsinki Lauri Halonen/University of Helsinki

Based on a grooved quartz tuning fork (QTF), a mid-IR CO quartz-enhanced photoacoustic sensor was demonstrated, which removes the conventional requirement of spatial filter. A minimum detection limit of ~ 7 ppbv was obtained with a 300 ms integration time.

Authors:Lei Dong/Shanxi University Shangzhi Li/Shanxi University Hongpeng Wu/Shanxi University Angelo Sampaolo/University and Politecnico of Bari Pietro Patimisco/University and Politecnico of Bari Vincenzo Spagnolo/University and Politecnico of Bari Frank Tittel/Rice University

We present a mid-infrared supercontinuum-based trace gas sensor. A lock-in technique is applied to enhance the signal-to-noise ratio by over an order of magnitude, achieving a sensitivity of ~10 ppbv Hz^-1/2 for the detection of methane.

Authors:KHALIL ESLAMI JAHROMI/Radboud Universiteit Nijmegen Amir Khodabakhsh/Radboud Universiteit Nijmegen Mohammadreza Nematollahi/Radboud Universiteit Nijmegen Qing Pan/Radboud Universiteit Nijmegen Frans J. Harren/Radboud Universiteit Nijmegen

We demonstrate a waveguide-enhanced Raman sensor functionalized with mesoporous silica coating for organic compounds in aqueous solutions. The detection limit of cyclohexanone in water is improved by at least 100 times compared to bare waveguides.

Authors:Zuyang Liu/Ghent University - IMEC Haolan Zhao/Ghent University - IMEC Bettina Baumgartner/Technische Universitat Wien Bernhard Lendl/Technische Universitat Wien Andre Skirtach/Ghent University Nicolas Le Thomas/Ghent University - IMEC Roel Baets/Ghent University - IMEC

We introduce a CMOS-compatible waveguide interferometry for single nanoparticle detection using optical dark-field scattering and heterodyne technique. The integrated sensor is capable of detecting single 40-nm-radius nanoparticles with a signal-to-noise ratio of 13 dB.

Authors:ming jin/Peking University shuijing tang/Peking University Haowen Shu/Peking University yuansheng tao/Peking University Xingjun Wang/Peking University yunfeng xiao/Peking University

We demonstrated a diode laser pumped high-power Kerr-lens mode-locked Yb:CaYAlO₄ oscillator. 97-fs pulses with up to 10-W average power were obtained with the assistance of an additional Kerr medium in a double confocal cavity.

Authors:Rui Xu/Xidian University Geyang Wang/Xidian University Li Zheng/Xidian University Wenlong Tian/Xidian University Xiaodong Xu/Jiangsu Normal University Jiangfeng Zhu/Xidian University zhiyi wei/Institute of Physics Chinese Academy of Sciences

Standard collinear pumping of Yb-oscillators with dichroic mirrors severely limits operation at minimum pulse-duration due to dispersion and losses. A novel pumping scheme enables substantially higher efficiency, opening new opportunities for compact high-power few-cycle Yb-oscillators.

Authors:François Labaye/Universite de Neuchatel Valentin Wittwer/Universite de Neuchatel Norbert Modsching/Universite de Neuchatel Olga Razskazovskaya/Universite de Neuchatel Eric Cormier/Laboratoire Photonique, Numérique et Nanosciences Thomas Südmeyer/Universite de Neuchatel

A new mode-locking mechanism is discussed that solely relies on four-wave mixing and does not require a saturable absorber. This mechanism explains a number of previously reported peculiar findings of self-modelocking and comb formation.

Authors:Esmerando Escoto/Max Born Institute Ayhan Demircan/Leibniz University Hannover Ihar Babushkin/Leibniz University Hannover Gunter Steinmeyer/Max Born Institute

We investigate the starting dynamics of an environmentally-stable linear Mamyshev oscillator that is started by modulation of the pump power. A moving filter is implemented to generate 21-nJ and 65-fs pulses.

Authors:Yi-Hao Chen/Cornell University Pavel Sidorenko/Cornell University Robert Thorne/MiTeGen, LLC Frank Wise/Cornell University

We will present the state of the art in the use of this new class of 2D materials such as graphene, graphene oxide, reduced graphene oxide, rhenium disulfide and Black Phosphorous to obtain ultrashort pulses.


Authors:Thoroh De Souza/Universidade Presbiteriana Mackenzie

We demonstrate 55-fs pulses at 802 nm from a directly-diode-pumped Ti:sapphire laser modelocked using single-walled carbon nanotubes spin-coated on a cavity mirror. This low-loss saturable absorber enables modelocking with pump powers as low as 545 mW.

Authors:Toby Mitchell/Heriot-Watt University Pablo Castro-Marin/Heriot-Watt University Jinghua Sun/Dongguan University of Technology Derryck Reid/Heriot-Watt University

We have for the first time demonstrated a SESAM-like device operating beyond 3 micron. The SESAM-like device is comprised of a highly-reflective Si/SiO Bragg reflector, a Dirac semimetal thin film absorber and a mica substrate as the passivation layer.

Authors:Yafei Meng/Nanjing University Yunkun Yang/Fudan University Xinchao Zhao/Shanghai Institute of Technical Physics Chinese Academy of Science yongbing Xu/Nanjing University Shaowei Wang/Shanghai Institute of Technical Physics Chinese Academy of Science Faxian Xiu/Fudan University Yi Shi/Nanjing University Fengqiu Wang/Nanjing University

First proposed in 1970, intracavity absorption spectroscopy (ICAS) has developed into a powerful diagnostics technique. This talk will focus on recent ICAS applications to combustion diagnostics and sketch promising future developments.

Authors:Peter Fjodorow/University of Duisburg-Essen

We developed a new diagnostic technique based on a widely tunable difference-frequency-generation laser for combustion studies. We applied this technique to probe benzene near 14.84 μm during its formation from propargyl radicals.

Authors:Mohammad Khaled Shakfa/King Abdullah University of Science and Technology (KAUST) Mhanna Mhanna/King Abdullah University of Science and Technology (KAUST) Marco Marangoni/Politecnico di Milano Aamir Farooq/King Abdullah University of Science and Technology (KAUST)

The aim of this work is to present the recent advances in high spatial resolution profiling of aerosols with a short-range multi-static elastic lidar system. The objective is to retrieve the radiative properties of soot particles in smoke clouds, using light-scattering computation.

Authors:Lucas Paulien/ONERA Romain Ceolato/ONERA

We report on 845-nm lasing generation of atomic oxygen in a methane-air flame by using 2-photon pumping with femtosecond 226-nm laser pulses, particularly focusing on the impact of glow discharges forcing on the backward lasing.

Authors:Pengji Ding/Lund University

We explore the potential of femtosecond laser-induced filamentation for optical gas imaging. In a proof-of-concept experiment, non-contact three-dimensional hyperspectral imaging of an alcohol/air flame is demonstrated with high spatial and spectral resolution.

Authors:xiaoyue wang/East China Normal University Ming Yan/East China Normal University Shuai Yuan/University of Shanghai for Science and Technology Junyi Nan/East China Normal University XINYI REN/East China Normal University Yinqi Wang/East China Normal University Heping Zeng/East China Normal University

A new technique to map at high temporal resolution in a single shot way a gas jet is presented.

Authors:François Sylla/SourceLAB SAS Benoit Wattellier/Phasics Ivan Doudet/Phasics

We present multiwavelength single-shot ptychography, a technique which is ideally suited for imaging dynamically evolving plasmas. Through improvements to single-shot ptychography and a novel probe constraint, wavelength-multiplexed single-shot ptychography was developed and experimentally realized.

Authors:Jonathan Barolak/Colorado School of Mines David Goldberger/Colorado School of Mines Yves Bellouard/Ecole Polytechnique Federale de Lausanne Jeffrey Squier/Colorado School of Mines Charles Durfee/Colorado School of Mines Daniel Adams/Colorado School of Mines

A GHz-burst ablation rate using fast scan of ultra-short laser pulses depends on pulse fluence [J/cm²] as F_p² due to strong absorption within the skin depth of photo-excited material. The very same phenomenon of shallow energy deposition is responsible for polymerisation using fast 1cm/s scan of ultra-short laser pulses.

Authors:Saulius Juodkazis/Swinburne University of Technology

A non-fading and environment-friendly technique of generation of bright vivid colors is achieved through femtosecond laser modification of semicontinuous Ag films, which thermally induces changes in the nanostructures resulting in the variation of optical spectra.

Authors:Sarah Chowdhury/Purdue University Piotr Nyga/Purdue University Zhaxylyk Kudyshev/Purdue University Esteban Garcia/Purdue University Alexander Kildishev/Purdue University Vladimir Shalaev/Purdue University Alexandra Boltasseva/Purdue University

Using femtosecond laser writing technique, near-surface waveguides with no need for additional processing were written in silver-containing glasses. An ultra-sensitive refractive index sensor exhibiting a novel double-wing feature is manufactured in a 1 cm glass chip

Authors:Alain Abou Khalil/Université de Bordeaux Philippe Lalanne/Université de Bordeaux Jean-Philippe Bérubé/Université Laval Sylvain Danto/Université de Bordeaux Thierry Cardinal/Université de Bordeaux Yannick Petit/Université de Bordeaux Réal Vallée/Université Laval Lionel Canioni/Université de Bordeaux

We demonstrate a lithography-free laser-based manufacturing process for low temperature deposited hydrogenated amorphous silicon waveguides. The waveguide boundaries are defined using a localised crystallisation process, allowing precise manufacture of complex waveguide structures.

Authors:Stuart MacFarquhar/University of Southampton Ozan Aktas/University of Southampton Swe Oo/University of Southampton Dong Wu/University of Southampton Harold Chong/University of Southampton Anna Peacock/University of Southampton

A laser processing method is introduced for post-deposition tailoring of local composition and bandgap in amorphous silicon-germanium thin films on silicon substrates. Spatial distribution of the alloy constituents can be controlled through the scan speed.

Authors:Ozan Aktas/University of Southampton Stuart MacFarquhar/University of Southampton Swe Oo/University of Southampton Vinita Mittal/University of Southampton Harold Chong/University of Southampton Anna Peacock/University of Southampton

Herein, for the first time to our knowledge, we experimentally demonstrate Fano resonant all-dielectric metasurfaces comprising of high- and median-index nanopillars (HfO$_2$, TiO$_2$ and ZrO$_2$) with zero loss in visible range for polarization-sensitive structural coloration.

Authors:Omid Hemmatyar/Georgia Institute of Technology Zhou Lu/Georgia Institute of Technology Tyler Brown/Georgia Institute of Technology Hossein Maleki/Georgia Institute of Technology Ali Adibi/Georgia Institute of Technology

Metalens with fixed-gap nanopillars release fabrication challenges in photolithography on CMOS platform. Their performances are investigated through simulation, and the characterization results of metalens patterned directly on 12-inch glass-wafer via immersion lithography are presented.

Authors:Yuan Hsing Fu/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Nanxi Li/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Qize Zhong/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Yuan Dong/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Ting Hu/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Dongdong Li/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Zhengji Xu/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Yanyan Zhou/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Keng Heng Lai/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Vladimir Bliznetsov/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Hou-Jang Lee/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Wei Loong Loh/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Shiyang Zhu/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Qunying Lin/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Navab Singh/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research)

A high-performance on-chip reconfigurable mode-order converter is realized, based on subwavelength symmetric multimode Y-junctions assisted by phase shifters. The data information carried among four different mode channels can be arbitrarily converted or remain the same.

Authors:Lu hui/Huazhong University of Science and Technology Deming Liu/Huazhong University of Science and Technology Max Yan/KTH Royal Institute of Technology Minming Zhang/Huazhong University of Science and Technology

We report the suppression of avoided-mode-crossing induced by polarization mode-coupling in a high-index-contrast AlGaAs-on-insulator microresonator. An avoided-mode-crossing-free TE-mode anomalous dispersion microresonator is demonstrated by reducing the cavity lifetime of the coupled TM mode.

Authors:Chanju Kim/DTU Fotonik Yi Zheng/DTU Fotonik Kresten Yvind/DTU Fotonik Minhao Pu/DTU Fotonik

We design and fabricate an integrated arbitrary filter near 1550 nm. The 50 mm long 55-notch filter is implemented on a low-loss Si₃N₄/SiO₂ spiral waveguide. The notches have uniform depths/widths of about 28 dB/0.22 nm.

Authors:Yi-Wen Hu/University of Maryland Shengjie Xie/University of Maryland Jiahao Zhan/University of Maryland Yang Zhang/University of Maryland Sylvain Veilleux/University of Maryland Mario Dagenais/University of Maryland

A photoreceiver with balanced SiN waveguide photodetectors and BiCMOS transimpedance amplifier is proposed, achieving a high conversion gain of greater than 2 kV/W up through 2 GHz, and a low in-band NEP of 8 pW/√Hz.

Authors:Robert Costanzo/University of Virginia Qianhuan Yu/University of Virginia Xiaochuan Shen/University of Virginia Junyi Gao/University of Virginia Andreas Beling/University of Virginia Steven Bowers/University of Virginia

We demonstrate for the first time voltage driven phase modulation with liquid crystal on SiN photonics at 874nm wavelength. We report a V_πL_π 0.72 V. cm with a loss of 1.8dB/cm

Authors:John Sundar Kamal/IMEC Aleksandrs Marinins/IMEC Bruno Figeys/IMEC Roelof Jansen/IMEC Xavier Rottenberg/IMEC Przemyslaw Kula/Military univesity of technology Jeroen Beeckman/Ghent university Marcus Dahlem/IMEC Philippe Soussan/IMEC

We report nonvolatile electrically reconfigurable photonic switches using PCM-clad waveguides and microrings actuated by in-situ silicon PIN heaters. High extinction ratio (~15 dB), near-zero extra loss, and high cyclability (> 1000) are demonstrated.

Authors:Jiajiu Zheng/University of Washington, Seattle Zhuoran Fang/University of Washington, Seattle Changming Wu/University of Washington, Seattle Shifeng Zhu/University of Washington, Seattle Peipeng Xu/Ningbo University Jonathan Doylend/Intel Corporation Sanchit Deshmukh/Stanford University Eric Pop/Stanford University Scott Dunham/University of Washington, Seattle Mo Li/University of Washington, Seattle Arka Majumdar/University of Washington, Seattle

A selective coupling behavior of Dyakonov surface wave at the liquid-crystal-based interface has been demonstrated experimentally. Such a highly directional and lossless surface wave has promising applications in two-dimensional photonic circuits and devices.

Authors:Yan Li/Tsinghua University Jingbo sun/Tsinghua University yongzheng wen/Tsinghua University Ji Zhou/Tsinghua University

We utilize machine learning algorithm to design integrated photonic meta-systems, and experimentally demonstrated the device performance.

Authors:Zi Wang/University of Delaware Lorry Chang/University of Delaware Feifan Wang/University of Delaware Tiantian Li/University of Delaware Tingyi Gu/University of Delaware

We demonstrate the generation and self-heterodyne detection of a 2-µm-band 32-Gbit/s line-rate 16-QAM signal based on inter-band wavelength conversion in an AlGaAsOI nanowaveguide. Error-free performance is achieved using LDPC codes with 33% overhead.

Authors:Yong Liu/Technical University of Denmark Deming Kong/Technical University of Denmark Zhengqi Ren/University of Southampton Yongmin Jung/University of Southampton Minhao Pu/Technical University of Denmark Kresten Yvind/Technical University of Denmark Michael Galili/Technical University of Denmark Leif K. Oxenløwe/Technical University of Denmark David Richardson/University of Southampton Hao Hu/Technical University of Denmark

We demonstrate all-optical routing of wavelength-multiplexed fiber-optic data streams. Utilizing an all-optical frequency processor, we show low-noise broadcasting and carrier-frequency hopping of binary data without optical-to-electrical conversion.

Authors:Joseph Lukens/Oak Ridge National Laboratory Hsuan-Hao Lu/Purdue University Bing Qi/Oak Ridge National Laboratory Pavel Lougovski/Oak Ridge National Laboratory Andrew Weiner/Purdue University Brian Williams/Oak Ridge National Laboratory

Unlike linear transmission, the performance of nonlinear optical fiber transmission can change significantly in the presence of power excursion. We experimentally show a much larger SNR degradation and its dependence on the location of power excursion.

Authors:Xiatao Huang/University of Electronic Science and Technology of China Xingwen Yi/Sun Yat-Sen University Gai Zhou/The Hong Kong Polytechnic University Taowei Jin/University of Electronic Science and Technology of China Ruiqi Fan/The Hong Kong Polytechnic University Fan Li/Sun Yat-Sen University Zhaohui Li/Sun Yat-Sen University Jing Zhang/University of Electronic Science and Technology of China Bo Xu/University of Electronic Science and Technology of China Alan Pak Tao Lau/The Hong Kong Polytechnic University

We propose a jointly optimized nonlinear Fourier transform (NFT)-based transmitter and neural network-based receiver. More than two orders of magnitude improvement in bit error ratio is numerically reported for 5600-km transmission compared to a standard NFT system.

Authors:Simone Gaiarin/DTU Fotonik Rasmus Jones/DTU Fotonik Francesco Da Ros/DTU Fotonik Darko Zibar/DTU Fotonik

We propose an analytical channel model for optical communication systems employing the nonlinear division multiplexing scheme using b-modulation and show that as the energy of the NFT burst grows, the noise in the b-coefficient decreases.

Authors:Stanislav Derevyanko/Ben Gurion University of the Negev Dmitry Shepelsky/B.I. Verkin Institute for Low Temperature Physics and Technology Maryna Pankratova/Aston Institute of Photonic Technologies, Aston University Anastasiia Vasylchenkova/Aston Institute of Photonic Technologies, Aston University Nikolai Chichkov/Aston Institute of Photonic Technologies, Aston University Jaroslaw Prilepsky/Aston Institute of Photonic Technologies, Aston University

We present an efficient numerical model to predict the performance penalty induced by Rayleigh backscattered light arising from counter-propagating pumps in Raman-amplified ultra-wide-band transmission systems. The model is validated through comparison with experimental findings.

Authors:Gabriele Di Rosa/VPIphotonics GmbH Md Iqbal/Aston Institute of Photonics Technologies André Richter/VPIphotonics GmbH Wladek Forysiak/Aston Institute of Photonics Technologies

We propose a compact thermal infrared spectral imager comprising a metasurface composed of subwavelength-spaced graphene-loaded slot antennas. We establish a model for the antennas’ properties and simulate a metasurface with broadband efficient absorption.

Authors:Jordan Goldstein/Massachusetts Institute of Technology Dirk Englund/Massachusetts Institute of Technology

We demonstrate a nanoscale photoconductive photodetector with seven-atom wide armchair-edge graphene nanoribbons as the active material. The detector responsivity is 0.04 mAW^-1 with a dark current below 30 pA under a bias voltage of 1.5 V.

Authors:Seyed Khalil Alavi/University of Cologne Boris Senkovskiy/University of Cologne Dirk Hertel/University of Cologne Danny Haberer/University of California at Berkeley Yoichi Ando/University of Cologne Klaus Meerholz/University of Cologne Felix R. Fischer/University of California at Berkeley Alexander Grüneis/University of Cologne Klas Lindfors/University of Cologne

Two-dimensional materials represent a promising route to create compact and novel hybrid chip-based architectures. I will here discuss some of these developments, including the demonstration of graphene/ Si3N4 waveguides for chip-based saturable absorbers.

Authors:Christelle Monat/Institut des Nanotechnologies de Lyon Pierre Demongodin/Institut des Nanotechnologies de Lyon Jeremy Lhuillier/Institut des Nanotechnologies de Lyon Thomas Wood/Institut des Nanotechnologies de Lyon Malik kemiche/Institut des Nanotechnologies de Lyon Houssein El Dirani/CEA-LETI Corrado SCIANCALEPORE/CEA-LETI

We demonstrate a platform for ultra-strong optical modulation in hybrid silicon nitride (SiN)/2D waveguides, by leveraging the gate dependent absorption modulation in graphene and the strong electro-refractive effects in monolayer TMDs.

Authors:Ipshita Datta/Columbia University Sang Chae/Columbia University Brian Lee/Columbia University Baichang Li/Columbia University James Hone/Columbia University Michal Lipson/Columbia University

We demonstrate lasing at room temperature of monolayer WSe₂ integrated with a silicon nitride ring resonator. Signatures of lasing are shown by a ‘kink’ in the L-L plot and 30% linewidth narrowing when reaching threshold.

Authors:Marissa Granados Báez/University of Rochester ARUNABH MUKHERJEE/University of Rochester Liangyu Qiu/University of Rochester Chitraleema Chakraborty/University of Rochester Nickolas Vamivakas/University of Rochester Jaime Cardenas/University of Rochester

We observe transport of indirect excitons over a distance greater than 10 μm in a MoSe₂/WSe₂ heterostructure. The transport is switched on or off by gate voltage and is observed up to 40 K.

Authors:Lewis Fowler-Gerace/University of California, San Diego Darius Choksy/University of California, San Diego Leonid Butov/University of California, San Diego

Combined photoluminescence and Raman spectroscopies of WS₂/graphene heterostructure through pump-power and temperature controls show that redshift of photoluminescence is mainly caused by pump induced heating, while linewidth-broadening has contributions from both heating and carrier transfer.

Authors:Ruiling Zhang/Tsinghua University Lin Gan/Tsinghua University Danyang Zhang/Tsinghua University Jiabin Feng/Tsinghua University Cunzheng Ning/Tsinghua University

In this tutorial we introduce the fundamentals of polariton formation in 2D materials in the strong light-matter coupling regime and their potential applications. Realization of exciton, phonon and plasmon polaritons will be discussed.
Vinod Menon is a Professor of Physics at the City College of New York and doctoral faculty at the Graduate Center of the City University of New York (CUNY). He is also a fellow of the Optical Society of America and an IEEE Distinguished Lecturer in Photonics (2018-2020).

Authors:Vinod Menon/City College of New York & Graduate Center - CUNY

We investigate the antiferromagnetic topological insulator MnBi₄Te₇ using Raman and powder XRD under high pressure. Raman peaks are red-shifted from 0 to 8.28 GPa. No structural phase transition is observed below 10.4GPa.

Authors:Zhangji Zhao/University of California Los Angeles Chaowei Hu/University of California Los Angeles Abby Kavner/University of California Los Angeles Ni Ni/University of California Los Angeles Chee Wei Wong/University of California Los Angeles

We have for the first time reported third harmonic generation in a three-dimensional Dirac semimetal Cd3As2 film. We further demonstrate that a simple planar cavity can be used to significantly enhance
the nonlinear response.

Authors:Kaleem Ullah/Nanjing University Yafei Meng/Nanjing University Yue Yue Sun/Nanjing University Yunkun Yang/Fudan university Anran Wang/Nanjing University Xiangjing Wang/Nanjing University Xiaoqing Chen/Nanjing University Taotao Li/Nanjing University Danfeng Pan/Nanjing University Xinran Wang/Nanjing University Faxian Xiu/Fudan university Yi Shi/Nanjing University Fengqiu Wang/Nanjing University

Point defects are robust quantum memories and versatile quantum sensors. Millions of potential defects exist; however, their identification is tedious and challenging. I will discuss approaches to efficiently characterize quantum defects in new materials.

Authors:Lee Bassett/University of Pennsylvania

We report the on-demand generation of perfect soliton crystals in a LiNbO3 microresonator, with an arbitrary dialing of the comb line spacing from 1 to 11 times of the free-spectral range of the resonator.

Authors:Yang He/University of Rochester Jingwei Ling/University of Rochester Mingxiao Li/University of Rochester Qiang Lin/University of Rochester

Through dual-driven method, we successfully access to the effective red detuning zone for platicon generation in normal dispersion regime via intensity-modulated pump, and the phase noise performance also beats the local oscillator at high frequency.

Authors:Hao Liu/University of California Los Angeles Wenting Wang/University of California Los Angeles Shu-Wei Huang/University of Colorado Boulder, Mingbin Yu/Institute of Microelectronics, A*STAR Dim-Lee Kwong/Institute of Microelectronics, A*STAR Chee Wei Wong/University of California Los Angeles

Recent measurement of refractive indices of binary III-V semiconductors GaN, GaP, GaAs, GaSb, InAs and InSb over temperature range of 77 – 450 K and wavelength range spanning the transmission window of each will be presented.

Authors:Shekhar Guha/US Air Force Research Laboratory Jean Wei/UES, Inc Joel Murray/UES, Inc

We present a novel dispersion measurement technique using a reflective common-path nonlinear interferometer. Our method is fast, alignment-free, and does not require phase stabilization. It can extract the dispersion for samples with dispersion-length products as small as D×L~0.007 ps/nm.

Authors:Arash Riazi/University of Toronto Changjia Chen/University of Toronto Eric Zhu/University of Toronto Alexey Gladyshev/Russian Academy of Science Peter Kazansky/University of Southampton, Southampton John Sipe/University of Toronto Li Qian/University of Toronto

We demonstrate widely tunable parametric oscillation in a magnesium-fluoride optical microresonator. The observed tuning range spans from 0.9 to 2.6 μm, and the presence of parametric signals out to 3.9 μm is inferred.

Authors:Noel Sayson/University of Auckland Toby Bi/University of Auckland Vincent Ng/University of Auckland Hoan Pham/University of Auckland Luke Trainor/University of Otago Harald Schwefel/University of Otago Stephane Coen/University of Auckland Miro Erkintalo/University of Auckland Stuart Murdoch/University of Auckland

We experimentally demonstrate that dissipative Kerr solitons generated in different spectral regions can stably coexist in a single optical microresonator enabling spectral multiplexing of soliton microcombs.

Authors:Maxim Karpov/Lab. of Photonics and Quantum Measuremen Martin Pfeiffer/Lab. of Photonics and Quantum Measuremen Anton Lukashchuk/Lab. of Photonics and Quantum Measuremen Junqiu Liu/Lab. of Photonics and Quantum Measuremen Tobias Kippenberg/Lab. of Photonics and Quantum Measuremen

We demonstrate the first widely-separated optical parametric oscillation in silicon nanophotonics, with milliwatt-level threshold power that is > 50 times smaller than other widely-separated OPOs. This demonstration is promising for on-chip visible light generation

Authors:Xiyuan Lu/National Inst of Standards & Technology Gregory Moille/National Inst of Standards & Technology Anshuman Singh/National Inst of Standards & Technology Qing Li/National Inst of Standards & Technology Daron Westly/National Inst of Standards & Technology Ashutosh Rao/National Inst of Standards & Technology Su-Peng Yu/National Inst of Standards & Technology Travis Briles/National Inst of Standards & Technology Scott Papp/National Inst of Standards & Technology Kartik Srinivasan/National Inst of Standards & Technology

Using 2D THz spectroscopy we can investigate photonic and phononic excitation and isolate the dominant and secondary nonlinear excitation pathways. We present a general framework for 2D THz spectroscopy in solids that provides important clarification for the growing new field of nonlinear phononics.

Authors:Brittany Knighton/Brigham Young University Megan Nielslon/Brigham Young University R. Tanner Hardy/Brigham Young University Aldair Alejandro/Brigham Young University Lauren Rawlings/Brigham Young University Clayton Moss/Brigham Young University Jeremy Johnson/Brigham Young University

We demonstrate a giant difference-frequency generation of THz waves in a subwavelength waveguide, mediated by phonon-photon strong coupling. The nonlinear susceptibility achieved five (three) orders of magnitude larger than that for visible light (microwave).

Authors:Yao lu/Nankai University Qiang Wu/Nankai University hao xiong/Nankai University Zhigang Chen/Nankai University Jingjun Xu/Nankai University

Comparing the polarimetry of the high-order sidebands emitted by bulk GaAs with theory, we can extract the Luttinger parameters, from which Bloch wavefunctions and Berry curvature of the valence band can be calculated.

Authors:James O'Hara/Department of Physics, UCSB Joe Costello/Department of Physics, UCSB Qile Wu/University of Michigan Darren Valovcin/Department of Physics, UCSB Loren Pfeiffer/Princeton University Mackillo Kira/University of Michigan Mark Sherwin/Department of Physics, UCSB

Although analytical solutions exist, the analysis of two-dimensional spectroscopy (2DCS) data can be tedious. A machine learning approach to analyzing 2DCS spectra is presented. We test the accuracy of the algorithm on simulated and experimental data.

Authors:Michael Titze/Florida International University Srikanth Namuduri/Florida International University Shekhar Bhansali/Florida International University Hebin Li/Florida International University

We investigate quantum dynamics of excitons in MoSe₂ bilayers using coherent two-dimensional spectroscopy. When compared to a MoSe₂ monolayer, we find ultrafast dephasing and an additional excited state absorption in the bilayer.

Authors:Sophia Helmrich/Technical University Berlin Kevin Sampson/University of Texas at Austin Kha Tran/University of Texas at Austin Ulrike Woggon/Technical University Berlin Nina Owschimikow/Technical University Berlin Xiaoqin Li/University of Texas at Austin

We introduce an approach to engineer defects in hBN using intense pulses resonant with phonons at 7.3 μm. Such defects are highly subwavelength (< 30 nm) with an alignment sensitive to the polarization.

Authors:Mehdi Jadidi/Columbia University Cecilia Chen/Columbia University Baichang Li/Columbia University Jared Ginsberg/Columbia University Sang Chae/Columbia University Chaitali Joshi/Columbia University Gauri Patwardhan/Columbia University Watanabe Watanabe/National Institute for Materials Science Takashi Taniguchi/National Institute for Materials Science James Hone/Columbia University Alexander Gaeta/Columbia University

We demonstrate that strongly coupled organic microcavities exhibit strong resonant scattering at wavelengths corresponding to the hybrid polaritonic states. Interestingly, we observe that the scattering strength increases linearly with the photonic weight of the polaritons.

Authors:Adina Golombek/Tel-Aviv University M. Balasubrahmaniyam/Tel-Aviv University Maria Kaeek/Tel-Aviv University Keren Hadar/Tel-Aviv University Tal Schwartz/Tel-Aviv University

We report a strong Brillouin amplification in gas using hollow-core fibers, exceeding by 6 times the gain in solid silica fibers. A novel fiber laser using Brillouin lasing in gas has been demonstrated.

Authors:Fan Yang/Ecole Polytechnique Fédérale de Lausanne Flavien Gyger/Ecole Polytechnique Fédérale de Lausanne Luc Thévenaz/Ecole Polytechnique Fédérale de Lausanne

We investigate the limits to achievable finesse in hollow core fiber Fabry-Perot interferometers due to loss at the interferometer mirrors. We predict that finesses > 6000 is achievable and demonstrate a value of >3000 experimentally.

Authors:Meng Ding/University of Southampton Eric Fokoua/University of Southampton Thomas Bradley/University of Southampton Francesco Poletti/University of Southampton David Richardson/University of Southampton Radan Slavik/University of Southampton

Soliton dynamics in large-core gas-filled hollow capillary fibres can create high-energy sub-femtosecond and few-femtosecond pulses tuneable across the vacuum ultraviolet to infrared. Our work provides a new platform technology for ultrafast science.

Authors:John Travers/Heriot-Watt University Christian Brahms/Heriot-Watt University Teodora Grigorova/Heriot-Watt University Federico Belli/Heriot-Watt University

The contamination found on the cleaved end-facet of a hollow core fiber is identified as ammonium chloride. Through observations made under different experimental conditions we identify the likely contamination source and means to remove it.

Authors:Shuichiro Rikimi/University of Southampton Yong Chen/University of Southampton Matthew Partridge/University of Southampton Thomas Bradley/University of Southampton Ian Davidson/University of Southampton Austin Taranta/University of Southampton Francesco Poletti/University of Southampton Marco Petrovich/University of Southampton David Richardson/University of Southampton Natalie Wheeler/University of Southampton

We describe the experimental observation of ozone formation inside an air-filled hollow-core fiber driven by ultra-short pulses and its effect on the emitted UV resonant dispersive wave.

Authors:Mohammed Sabbah/Heriot-Watt University Federico Belli/Heriot-Watt University Christian Brahms/Heriot-Watt University Shou-Fei Gao/Beijing University of Technology Ying-Ying Wang/Beijing University of Technology Pu Wang/Beijing University of Technology John Travers/Heriot-Watt University

We report the first high-birefringence hollow-core anti-resonant fiber with a pseudo-C_4ν symmetry. The resulted fiber shows a phase birefringence, polarization extinction ratio, and loss of 0.9×10^-4, 25 dB, and 250 dB/km, respectively, at 1550 nm.

Authors:Yifeng Hong/Beijing University of Technology Shoufei Gao/Beijing University of Technology Wei Ding/Jinan University Yingying Wang/Beijing University of Technology Pu Wang/Beijing University of Technology

Laser-induced forward-transfer printing (LIFT) is presented as a new approach for high-speed serial transfer and assembly of microchips, serving the needs for future heterogeneously integrated systems-in-package.

Authors:Geert Van Steenberge/Ghent University - IMEC Tom Sterken/Ghent University - IMEC Jeroen Missinne/Ghent University - IMEC

We demonstrate a novel method of inducing a gradual change in semiconductor conductivity by combining grayscale processing of photoresist and proton implantation. This method is flexible and lends itself to many applications in semiconductor-based optical and electrical devices.

Authors:Sara Kacmoli/Princeton University Carlo Holly/Trumpf Photonics Inc. Claire Gmachl/Princeton University

Here, we demonstrate an efficient electro-absorption modulator (EAM) based on few-layered MoTe₂ into a silicon photonics platform for the 1^st time. The modulator exhibits an extinction ratio of ~0.1dB/m at 1310 nm.

Authors:RISHI MAITI/George Washington University Ti Xie/George Washington University Hao Wang/George Washington University Rubab Amin/George Washington University Chandraman Patil/George Washington University Volker Sorger/George Washington University

Hexagonal silicon-germanium (SiGe) is a direct bandgap semiconductor tunable between 1.8-3.5 µm. It features a subnanosecond radiative lifetime and a radiative efficiency comparable to III/V semiconductors, promising a Si-photonics light emitter. © 2020 The Authors

Authors:Jos Haverkort/Technische Universiteit Eindhoven Alain Dijkstra/Technische Universitat Munchen Marvin van Tilburg/Technische Universiteit Eindhoven Victor van Lange/Technische Universiteit Eindhoven Elham Fadaly/Technische Universiteit Eindhoven Jens Rene Suckert/Friedrich Schiller Universitat Claudia Rodl/Friedrich Schiller Universitat juergen furthmueller/Friedrich Schiller Universitat Friedhelm Bechstedt/Friedrich Schiller Universitat Silvana Botti/Friedrich Schiller Universitat David Busse/Technische Universitat Munchen Jonathan Finley/Technische Universitat Munchen Marcel Verheijen/Technische Universiteit Eindhoven Erik Bakkers/Technische Universiteit Eindhoven

We demonstrate, for the first time, a 3-5/SHREC wavelength-tunable laser operating at the application-rich region of 1653-1679 nm. Minimum side-mode suppression ratio and maximum output power of 34.4 dB and 26.79 mW respectively was obtained.

Authors:Jia Xu Brian Sia/Nanyang Technological University Xiang Li/Temasek Laboratories Wanjun Wang/Nanyang Technological University Zhongliang Qiao/Nanyang Technological University Xin Guo/Nanyang Technological University jin zhou/Nanyang Technological University callum littlejohns/University of Southampton Chongyang Liu/Temasek Laboratories Graham Reed/University of Southampton Hong Wang/Nanyang Technological University

Ge-on-Si single photon avalanche diodes are used to demonstrate LIDAR
in laboratory conditions. Modelling demonstrates that eye-safe kilometre range-finding is
achievable at 1450nm wavelength. Afterpulsing is found to be considerably lower than
commercial InGaAs/InP devices.

Authors:Ross Millar/University of Glasgow Jaroslaw Kirdoda/University of Glasgow Kateryna Kuzmenko/Heriot-Watt University Peter Vines/Heriot-Watt University Abderrahim Halimi/Heriot-Watt University Robert Collins$/Heriot-Watt University Aurora Maccarone/Heriot-Watt University Aongus McCarthy/Heriot-Watt University Zoë Greener/Heriot-Watt University Fiona Thorburn/Heriot-Watt University Derek Dumas/University of Glasgow Lourdes Ferre Llin/University of Glasgow Muhammad Mirza/University of Glasgow Douglas Paul/University of Glasgow Gerald Buller/Heriot-Watt University

We present DFG frequency comb systems operating between 3 and 5 µm based on femtosecond Er- and Yb-fiber laser-amplifier systems, providing an average power of up to 250 mW and 31 µW per comb mode with 1.5 Hz optical linewidths in the mid-IR.

Authors:Carsten Cleff/Menlo Systems GmbH Maximilian Bradler/Menlo Systems GmbH Peter Adel/Menlo Systems GmbH Stefan Matern/Menlo Systems GmbH Marc Fischer/Menlo Systems GmbH Ronald Holzwarth/Menlo Systems GmbH

We present a detailed frequency noise characterization of a mid-infrared QCL comb with separate investigations of an optical line, the mode spacing and the offset frequency, and show strong anti-correlation between the two free-running comb parameters.

Authors:Atif Shehzad/University of Neuchatel Pierre Brochard/University of Neuchatel Kenichi Komagata/University of Neuchatel Renaud Matthey/University of Neuchatel Filippos Kapsalidis/ETH Zurich Mehran Shahmohammadi/ETH Zurich Mattias Beck/ETH Zurich Andreas Hugi/IRsweep Pierre Jouy/IRsweep Jérôme Faist/ETH Zurich Thomas Südmeyer/University of Neuchatel Stephane Schilt/University of Neuchatel

We demonstrate absolute frequency stabilization of a quantum cascade dual-comb spectrometer to a molecular transition. A line-locked quantum cascade laser is introduced to the dual-comb system, improving frequency stability to <0.5 MHz.

Authors:Chu Teng/Princeton University Jonas Westberg/NEO Monitors Gerard Wysocki/Princeton University

We report mid-IR frequency comb with 3.25 W average power and spectrum spanning 60 THz near 2.4 µm. We stabilized the offset frequency of the comb with accumulated phase error of 75 mrads.

Authors:Sergey Vasilyev/IPG Photonics SETC Viktor Smolski/IPG Photonics SETC Jeremy Peppers/IPG Photonics SETC Igor Moskalev/IPG Photonics SETC Mike Mirov/IPG Photonics SETC Vladimir Fedorov/IPG Photonics SETC Yury Barnakov/IPG Photonics SETC Sergey Mirov/IPG Photonics SETC Valentin Gapontsev/IPG Photonics Corporation

We demonstrate the generation of highly stable THz-waves using a microresonator-based optical frequency comb. The compact chip-based photonic THz source is characterized for ultra-low phase noise operation. Potential applications range from telecommunication systems to THz-spectroscopy.

Authors:Shuangyou zhang/National Physical Laboratory Jonathan Silver/National Physical Laboratory Xiaobang Shang/National Physical Laboratory Leonardo Del Bino/National Physical Laboratory Nick Ridler/National Physical Laboratory Pascal Del'Haye/National Physical Laboratory

We generate a broadband frequency comb using a PPLN WG in a single-branch configuration and simultaneously measure the carrier-envelope-offset frequency and the beat note with a CW laser at 1.56 μm with sufficient signal-to-noise ratio.

Authors:Kazumichi Yoshii/Institute of Post-LED Photonics Feng-Lei Hong/Yokohama National University Takeshi Yasui/Institute of Post-LED Photonics Kaoru Minoshima/Institute of Post-LED Photonics Naoya Kuse/Institute of Post-LED Photonics

We use two chip-scale waveguide platforms for self-referenced carrier-envelope offset frequency detection of a 10-GHz modelocked laser. A tunable beat note with a 33-dB signal-to-noise ratio is generated with only 18-pJ of coupled pulse energy.

Authors:Léonard Krüger/ETH Zurich Yoshitomo Okawachi/Columbia University Xingchen Ji/Columbia University Alexander Klenner/Columbia University Adrea Johnson/Columbia University Carsten Langrock/Stanford University Marty Fejer/Stanford University Michal Lipson/Columbia University Alexander Gaeta/Columbia University Christopher Phillips/ETH Zurich Ursula Keller/ETH Zurich

Abstract not available.
Bio not available.

Authors:Dirk Englund/Massachusetts Institute of Technology

We show the design, fabrication, and integration of a 128-channel aluminum nitride photonic chip with tunable diamond quantum micro-chiplets containing silicon vacancy and germanium vacancy color centers, enabling a chip-integrated architecture towards multiplexed photon-mediated entanglement.

Authors:Tsung-Ju Lu/Massachusetts Institute of Technology Noel Wan/Massachusetts Institute of Technology Kevin Chen/Massachusetts Institute of Technology Michael Walsh/Massachusetts Institute of Technology Matthew Trusheim/Massachusetts Institute of Technology Lorenzo De Santis/Massachusetts Institute of Technology Eric Bersin/Massachusetts Institute of Technology Isaac Harris/Massachusetts Institute of Technology Sara Mouradian/Massachusetts Institute of Technology Ian Christen/Massachusetts Institute of Technology Edward Bielejec/Sandia National Laboratories Dirk Englund/Massachusetts Institute of Technology

We report efficient quantum-dot single-photon sources with unidirectional output integrated on Si by transfer printing. The device was designed to be robust against misalignment accompanied by the hybrid integration. Efficient single-photon generation was experimentally confirmed.

Authors:Ryota Katsumi/The University of Tokyo Yasutomo Ota/The University of Tokyo Takeyoshi Tajiri/The University of Tokyo Masahiro Kakuda/The University of Tokyo Hidefumi Akiyama/The University of Tokyo Satoshi Iwamoto/The University of Tokyo Yasuhiko Arakawa/The University of Tokyo

We demonstrate a homodyne detector consisting of integrated silicon waveguides and Si-Ge photodiodes wirebonded directly to an amplification integrated circuit. The device performance is verified by detecting squeezed vacuum over 9~GHz of optical bandwidth.

Authors:Jonathan Frazer/University of Bristol Joel Tasker/University of Bristol Giacomo Ferranti/University of Bristol Euan Allen/University of Bristol Floriane Brunel/Université Côte d'Azur Sebastien Tanzilli/Université Côte d'Azur Virginia D'Auria/Université Côte d'Azur Jonathan Matthews/University of Bristol

Photon pairs with flexibly tailorable spectral property are experimentally realized by using a fiber-based two-stage nonlinear interferometer scheme consisting of two pieces of dispersion-shifted fibers with a programmable optical filter in between.

Authors:Mingyi Ma/Tianjin University Liang Cui/Tianjin University Jiamin Li/Tianjin University Jie Su/Tianjin University Z. Y. Ou/Tianjin University Xiaoying Li/Tianjin University

We report the first directly modulated single-mode tunable quantum dot lasers at 1.3 µm. 27-channel wavelength switching was achieved with side-mode-suppression-ratio of around 35 dB without requiring nonuniform gratings or epitaxial regrowth.

Authors:Yating Wan/University of California Santa Barbara Sen Zhang/Zhejiang University Justin Norman/University of California Santa Barbara MJ Kennedy/University of California Santa Barbara William He/University of California Santa Barbara Yeyu Tong/University of California Santa Barbara Chen Shang/University of California Santa Barbara Jian-Jun He/Zhejiang University Hon Ki Tsang/The Chinese University of Hong Kong Arthur Gossard/University of California Santa Barbara John Bowers/University of California Santa Barbara

We have stabilized self mode-locked quantum dash lasers emitting at 1550nm, reducing pulse train RF linewidth by 100x, using optical feedback from dual fiber loops.


Authors:John Gerard McInerney/University College Cork

By utilizing homo-epitaxially formed (111)-faceted silicon hollow structures on U-shaped patterned SOI substrates, 1310 nm and 1510 nm InAs quantum dot (QD) fabry-perot and microdisk lasers are achieved on such platform, which paves a promising way to realize silicon-based light source.

Authors:Ting Wang/Institute of Physics, CAS

1550 nm InAs/InAlGaAs quantum dash lasers exhibit higher modulation efficiencies and bandwidths than the InGaAsP-based quantum well lasers. Their lasing thresholds, output powers and temperature stabilities are greatly improved after the high reflectance coating.

Authors:Bei Shi/University of California Santa Barbara Sergio Pinna/University of California Santa Barbara Wei Luo/Hong Kong University of Science and Technology Hongwei Zhao/University of California Santa Barbara Si Zhu/Hong Kong University of Science and Technology Simone Suran Brunelli/University of California Santa Barbara Kei May Lau/Hong Kong University of Science and Technology Jonathan Klamkin/University of California Santa Barbara

Abstract not available.
Biography not available.

Authors:Evelyn Hu/Harvard University

We experimentally demonstrated 100-Gb/s PAM-4 signal transmission over 25-km SSMF using a 10-G class DML. A polarization-diversity silicon micro-ring resonator is employed to enhance the dispersion tolerance and extinction ratio in the DML based IM/DD system.

Authors:Xiao Zhang/Key Lab. of Optical Fiber Sensing and Communications, University of Electronic Science and Technology of China, Chengdu 611731, China Yunhong Ding/DTU Fotonik, Technical University of Denmark, Kgs. Lyngby, Denmark Longsheng Li/DTU Fotonik, Technical University of Denmark, Kgs. Lyngby, Denmark Wei Jin/School of Electronic Engineering, Bangor University, Bangor LL57 1UT, U.K. Chongfu Zhang/Key Lab. of Optical Fiber Sensing and Communications, University of Electronic Science and Technology of China, Chengdu 611731, China Kun Qiu/Key Lab. of Optical Fiber Sensing and Communications, University of Electronic Science and Technology of China, Chengdu 611731, China Hao Hu/DTU Fotonik, Technical University of Denmark, Kgs. Lyngby, Denmark

We measure performance of 44-Gb/s (22-GBd) PAM-4 short-reach direct detection links with a polarization-independent surface-normal electro-absorption modulator. Transmission is demonstrated in standard single-mode fiber links with no dispersion compensation for distances up to 18 km.

Authors:Patrick Iannone/Nokia Bell Labs Xi Chen/Nokia Bell Labs Stefano Grillanda/Nokia Bell Labs Gregory Raybon/Nokia Bell Labs Andrew Adamiecki/Nokia Bell Labs Ellsworth Burrows/Nokia Bell Labs Ting-Chen Hu/Nokia Bell Labs David Neilson/Nokia Bell Labs Nagesh Basavanhally/Nokia Bell Labs Yee Low/Nokia Bell Labs Rose Kopf/Nokia Bell Labs Alaric Tate/Nokia Bell Labs Mark Earnshaw/Nokia Bell Labs

We demonstrate a coherent polarization multiplexed carrier based self-homodyne
(PMC-SH) 16-QAM link using a phase synchronization IC and an automatic polarization
control technique. The system can replace PAM-4 links to achieve practical high-capacity
short-reach DCIs.

Authors:Rakesh Ashok/IIT Bombay Rashmi Kamran/IIT Bombay Sana Naaz/IIT Bombay Shalabh Gupta/IIT Bombay

We demonstrated 4×150Gbit/s PAM8 signal transmission system using dual-drive MZM and direct-detection for the first time. By optimizing the Volterra equalizer, 30km SSMF without CD compensation is achieved with BER below HD-FEC limit of 3.8×10^-3.

Authors:Li Di/Huazhong University of Sci. & Tech. wen cheng/Huazhong University of Sci. & Tech. Haiping Song/Huazhong University of Sci. & Tech. Lei Deng/Huazhong University of Sci. & Tech. Mengfan Cheng/Huazhong University of Sci. & Tech. Songnian Fu/Huazhong University of Sci. & Tech. Ming Tang/Huazhong University of Sci. & Tech. Deming Liu/Huazhong University of Sci. & Tech.

Applications of AI in realtime applications calls for low-power and low-latency. This talk will explore emerging techniques in which analog physical systems, as well as laws of physics, are being employed to enhance artificial intelligence.


Authors:BAHRAM JALALI/University of California Los Angeles

Here we demonstrate an on-chip programmable multi-level non-volatile photonic memory based on an ultra-compact (<4µm) hybrid GSST-silicon Mach Zehnder modulator, with low insertion losses (3dB), used as node in a photonic neural network that effortlessly perform inference

Authors:Mario Miscuglio/George Washington University Jiawei Meng/George Washington University Omer Yesilyurt/Birck Nanotechnology Center, Purdue University Ludmila Prokopeva/Birck Nanotechnology Center, Purdue University Yifei Zhang/, Massachusetts Institute of Technology Armin Mehrabian/George Washington University Juejun Hu/, Massachusetts Institute of Technology Alexander Kildishev/Birck Nanotechnology Center, Purdue University Volker Sorger/George Washington University

Dense photonic integration requires miniaturization of materials, devices and subsystems, including passive components (e.g., engineered composite metamaterials, filters, etc.), active components (e.g., lasers, modulators and nonlinear wave mixers) and integrated circuits (Fourier transform spectrometer, programmable phase modulator of free space modes, etc.). These novel devices are needed for future signal processing and neuromorphic processors.

Authors:Yeshaiahu Fainman/University of California San Diego

Here we report on a massively-parallel Fourier-optics convolutional processor accelerated 160x over spatial-light-modulators using digital-mirror-display technology as input and kernel. Testing the system on MNIST and CIFAR-10 datasets shows 96% and 54% accuracy, respectively.

Authors:Mario Miscuglio/George Washington University Zibo Hu/George Washington University Shurui Li/University of California Los Angeles Jiaqi Gu/University of Texas Aydin Babakhani/University of California Los Angeles Puneet Gupta/University of California Los Angeles Chee Wei Wong/University of California Los Angeles David Pan/University of Texas Seth Bank/University of Texas Hamed Dalir/Omega Optics Inc Volker Sorger/George Washington University

We present diffractive optical networks that can all-optically implement various functions following deep learning-based design of passive transmissive layers that work collectively. This framework has applications in all-optical image analysis, feature detection and object classification.


Authors:Aydogan Ozcan/University of California Los Angeles

Wi-Charge developed the ability to power devices from a distance. With 30ft. range and 100X more power than batteries a transforming building block is born. New dimension to power delivery. All thanks to infrared.


Authors:Ori Mor/Wi-Charge Ltd

For laser power converters dominated by photon recycling, optimized anti-reflection coatings will achieve efficiencies that exceed the Shockley-Queisser limit. We present designs for such coatings based on efficiency optimization considering both anti-reflection and low hemispherical emissivity.

Authors:Tianna McBroom/Syracuse University Eric Schiff/Syracuse University

Will review past demonstrations of laser power beaming, metrics for performance, and a focus on needs for improving end-to-end efficiency.

Authors:Thomas Nugent/Powerlight Technologies

We demonstrate an “unconcentrated” solar-powered laser (SPL) for energy conversion applications. The lasing threshold of the proof-of-concept apparatus is 0.07 W/cm² which is four orders of magnitude smaller than those of conventional SPLs.

Authors:Taizo Masuda/Toyota Motor Corporation Stephan Dottermusch/Karlsruhe Institute of Technology Ian Howard/Karlsruhe Institute of Technology Bryce Richards/Karlsruhe Institute of Technology Jean-Francois Bisson/Université de Moncton Masamori Endo/Tokai University

We report a spectrally-selective metafilm and implement it into a doubled-sided radiative cooling system. As a result, a cooling power beyond 280 W/m² was demonstrated experimentally, surpassing the single-sided blackbody radiation limit of ~ 160 W/m².

Authors:Lyu Zhou/State University of New York at Buffalo Haomin Song/State University of New York at Buffalo Nan Zhang/State University of New York at Buffalo Jacob Rada/State University of New York at Buffalo Matthew Singer/State University of New York at Buffalo Huafan Zhang/King Abdullah University of Science and Technology Boon S. Ooi/King Abdullah University of Science and Technology Zongfu Yu/University of Wisconsin-Madison Qiaoqiang Gan/State University of New York at Buffalo

We report a black TiO₂ on nanoporous anodic alumina oxide (AAO) architecture for improved solar vapor generation. The efficiency reached 85.3% under one sun illumination, corresponding to a vapor generation rate of 1.29 kg/(m²●h).

Authors:Youhai Liu/State University of New York at Buffalo Haomin Song/State University of New York at Buffalo Matthew Singer/State University of New York at Buffalo Lyu Zhou/State University of New York at Buffalo Nan Zhang/State University of New York at Buffalo Zongmin Bei/State University of New York at Buffalo Qiaoqiang Gan/State University of New York at Buffalo

We demonstrate a thin-disk oscillator delivering a record-high 430-W average power with 68-μJ, 769-fs pulses at 6.29-MHz repetition rate. We combined vacuum operation, an active multi-pass cavity, and a thin SESAM optimized for heat management.

Authors:Francesco Saltarelli/ETH Zurich Ivan Graumann/ETH Zurich Lukas Lang/ETH Zurich Dominik Bauer/TRUMPF Laser GmbH Christopher Phillips/ETH Zurich Ursula Keller/ETH Zurich

We present the first dual-comb thin-disk laser based on polarization splitting. It generates 6-W and 8-W outputs of 240-fs pulses with adjustable repetition rate. We investigate noise properties and demonstrate a proof-of-principle spectroscopy experiment.

Authors:Norbert Modsching/Université de Neuchâtel Jakub Drs/Université de Neuchâtel Julian Fischer/Université de Neuchâtel Stephane Schilt/Université de Neuchâtel Valentin Wittwer/Université de Neuchâtel Thomas Südmeyer/Université de Neuchâtel

We demonstrate HHG with ~10¹⁴ W/cm² peak intensity in argon and ~5×10¹³ W/cm² in krypton inside a mode-locked laser oscillator. The system operates with up to 180-W intracavity average power with 89-fs pulses at 11-MHz.

Authors:Julian Fischer/Time and Frequency Laboratory, University of Neuchatel Jakub Drs/Time and Frequency Laboratory, University of Neuchatel François Labaye/Time and Frequency Laboratory, University of Neuchatel Norbert Modsching/Time and Frequency Laboratory, University of Neuchatel Christian Kränkel/Zentrum für Lasermaterialien - Kristalle (ZLM-K) Valentin Wittwer/Time and Frequency Laboratory, University of Neuchatel Thomas Südmeyer/Time and Frequency Laboratory, University of Neuchatel

We present a novel approach based on spectral gain-flattening to obtain short-pulsed, high-power modelocking in thin-disk lasers with narrowband gain materials. Our numerical model and spectral-gain measurement scheme enable careful optimization of the experimental parameters.

Authors:Lukas Lang/ETH Zurich - Inst. of Quantum El. Ivan Graumann/ETH Zurich - Inst. of Quantum El. Francesco Saltarelli/ETH Zurich - Inst. of Quantum El. Valentin Wittwer/University of Neuchatel Thomas Südmeyer/University of Neuchatel Christopher Phillips/ETH Zurich - Inst. of Quantum El. Ursula Keller/ETH Zurich - Inst. of Quantum El.

We report a Kerr-lens mode-locked Cr:ZnS oscillator directly pumped by two laser diodes, providing 34 fs pulses with 800 mW average power at 2.4 µm. This low-noise affordable femtosecond laser facilitates numerous emerging mid-infrared applications.

Authors:Nathalie Nagl/Ludwig-Maximilians-Universität München Sebastian Gröbmeyer/Ludwig-Maximilians-Universität München Markus Pötzlberger/Max Planck Institute of Quantum Optics Vladimir Pervak/Ludwig-Maximilians-Universität München Ferenc Krausz/Ludwig-Maximilians-Universität München Ka Fai Mak/Max Planck Institute of Quantum Optics

We report on the generation of 7 mJ, 115 fs pulses at 2.4 µm and 1 kHz repetition rate from a Cr²⁺:ZnSe chirped pulse amplifier, which is very promising for applications in strong-field and attosecond physics.

Authors:Vyacheslav Leshchenko/The Ohio State University Bradford Talbert/The Ohio State University Yu Hang Lai/The Ohio State University Sha Li/The Ohio State University Cosmin Blaga/The Ohio State University Pierre Agostini/The Ohio State University Louis DiMauro/The Ohio State University

Cr:ZnSe laser amplifier resulted more than 40 uJ , 72fs pulses, at λ0 ≈ 2375nm. The CEP stability of the parametrically generated seed stands firm through 6 orders of magnitude of amplification.

Authors:Gilad Marcus/The Hebrew University, Jerusalem Pavel Komm/The Hebrew University, Jerusalem Uzziel Sheintop/The Hebrew University, Jerusalem Salman Noach/Jerusalem College of Technology

We demonstrate a first experiment of twin-field quantum key distribution over asymmetric channels. We use asymmetric signal intensities and show that the secret key rate can beat the repeaterless bound at 50 (30+20) dB total loss.

Authors:Xiaoqing Zhong/University of Toronro Wenyuan Wang/University of Toronro Li Qian/University of Toronro Hoi-Kwong Lo/University of Toronro

An integrated chip of MDI-QKD system is demonstrated. The system generates a key rate per pulse of 2.923 × 10^-6 over a distance corresponding to 50-km optical fibre with 25% detection efficiency.

Authors:LIN CAO/Peking University WEI LUO/Nanyang Technological University Yunxiang Wang/Nanyang Technological University Jun Zou/Nanyang Technological University Rudai Yan/Nanyang Technological University Hong Cai/Agency for Science, Technology and Research Xiaolong Hu/Tsinghua University Cong Jiang/Tsinghua University Xiaoqi Zhou/Sun Yat-sen University Shihai Sun/Nanyang Technological University Xiangbin Wang/Tsinghua University Yufeng Jin/Peking University Leong Kwek/Nanyang Technological University Ai Qun Liu/Nanyang Technological University

We offer a photon-efficient QKD protocol based on energy-time entangled biphoton frequency combs that supports multiplexing and rate adaptivity under various channel conditions.

Authors:Murat Sarihan/University of California,Los Angeles Kai-Chi Chang/University of California,Los Angeles Xiang Cheng/Beijing University of Posts and Telecommunications Yoo Seung Lee/University of California,Los Angeles Changchen Chen/Massachusetts Institute of Technology Tian Zhong/University of Chicago Hongchao Zhou/Shandong University Zheshen Zhang/University of Arizona Franco Wong/Massachusetts Institute of Technology Jeffrey shapiro/Massachusetts Institute of Technology Chee Wei Wong/University of California,Los Angeles

We experimentally demonstrate a practical self-referenced continuous variable quantum key distribution system composed of embedded data conversion/acquisition units and standard telecommunication components over a 25km optical fiber, with a predicted key rate of 649kbps.

Authors:Shengjun Ren/University of Cambridge Shuai Yang/University of Cambridge adrian wonfor/University of Cambridge Richard Penty/University of Cambridge Ian white/University of Cambridge

We will present guided-wave photonic solutions enabling the production and manipulation of entangled photons at telecommunication wavelengths. We will also discuss how entanglement-induced correlations are subsequently exploited as key re- sources for implementing fundamental quantum optical experiments, establishing long-distance quantum cryptography links, and for characterizing optical materials with unprecedented precision.
Sébastien Tanzilli is a CNRS research director at the Institut de Physique de Nice, Université Côte d‘Azur, where he leads the team “Quantum Photonics & Information”. He has a 20-year experience in the field of fundamental quantum optics and photonic-based quantum information systems, finding applications in quantum communication and metrology. He has been the PI, co-Pi, or partner of many research projects, at both the national and European levels, that led to more than 50 publications in international peer-reviewed journals, as well as several book chapters. He was awarded the CNRS Bronze Medal in 2009 and the French Optical Society Fabry - de Gramont Prize in 2008. Among his responsibilities, he is a member of several scientific committees, and he notably coordinates the CNRS network on “Quantum Engineering” that gathers a hundred teams all over Europe.

Authors:Sebastien Tanzilli/CNRS

We will present recent progress in the generation of various orbital angular momentum (OAM) using metasurfaces. The multiplexing of various topological charges in one metasurface and cavity-based mechanism for OAM lasing will be reported.

Authors:Chengwei Qiu/National University of Singapore

By supporting multiple hybridized surface plasmon resonances with spatial mode overlap, multiresonant nanolaminate plasmonic metamaterials can achieve broadband deep-subwavelength light concentration in the same nano-localized volume at multiple different wavelength ranges.

Authors:Seied Tali/Virginia Tech Junyeob Song/Virginia Tech Wonil Nam/Virginia Tech Wei Zhou/Virginia Tech

We experimentally demonstrate an unprecedented ultra-high-Q (2400) surface lattice resonance in a metasurface array of periodically arranged plasmonic nanostructures, which can be adopted for highly efficient nanophotonic applications e.g. nano-lasing, sensing, and nonlinear optical processes.

Authors:Md Saad-Bin-Alam/University of Ottawa Orad Reshef/University of Ottawa Yaryna Mamchur/National Technical University of Ukraine ``Igor Sikorsky Kyiv Polytechnic Institute'' Graham Carlow/Iridian Spectral Technologies Inc. Brian Sullivan/Iridian Spectral Technologies Inc. Jean-Michel Ménard/University of Ottawa Mikko Huttunen/Tampere University Ksenia Dolgaleva/University of Ottawa Robert Boyd/University of Ottawa

We demonstrate a novel all-dielectric, ultraviolet metasurface platform based on Tantalum Pentoxide, enabling high-performance meta-devices operating across the mid- and near-ultraviolet frequency regimes.

Authors:Cheng Zhang/National Inst of Standards & Technology Wenqi Zhu/National Inst of Standards & Technology Junyeob Song/National Inst of Standards & Technology David Carlson/National Inst of Standards & Technology Jinghui Yang/National Inst of Standards & Technology Lu Chen/National Inst of Standards & Technology Wei Zhou/Virginia Tech Scott B. Papp/National Inst of Standards & Technology Henri Lezec/National Inst of Standards & Technology Amit Agrawal/National Inst of Standards & Technology

Demonstration of nanophotonic platform for metasurface-based refractive index sensing. Prototype results indicate that dramatic cost (~$5,000) and scale (e.g. portable, handheld) reductions are attainable in comparison to existing technologies with comparable sensitivity (Δn= 10^-6).

Authors:Brittany Simone/Tulane University Isaac Oguntoye/Tulane University George Hartfield/Tulane University Siddharth Padmanabha/Tulane University Adam Ollanik/University of Colorado Boulder Matthew Escarra/Tulane University

Here we design and experimentally demonstrate broadband and highly polarization selective mid-IR absorbers with spectrally averaged absorption exceeding 70% and polarization extinction ratio of 40.6, covering the important 3-5 μm atmospheric band for infrared polarimetric imaging.

Authors:Junyu Li/Huazhong Univ. of Science and Technology Fei Yi/Huazhong Univ. of Science and Technology

We introduce a metafilm consisting of regions of metal and dielectric which has a much smaller penetration depth than that of a corresponding metal film, leading to enhanced device performance in lightweight ultrahigh reflectivity reflectors and increased packing density of subwavelength waveguides.

Authors:Nathan Zhao/Stanford University Ian Williamson/Stanford University Zhexin Zhao/Stanford University Salim Boutami/CEA Leti Shanhui Fan/Stanford University

We design and realize chalcogenide-based photonic quasicrystals enabling simultaneous phase matching of an arbitrary number of nonlinear optical processes in a single engineered nanostructure.

Authors:Jiannan Gao/Duke University Wiktor Walasik/Duke University Mikhail Shalaev/Duke University Jesse Frantz/US Naval Research Laboratory Jason Myers/US Naval Research Laboratory Robel Bekele/University Research Foundation Jasbinger Sanghera/US Naval Research Laboratory Natalia Litchinitser/Duke University

Aluminum has emerged as a broadband and low-cost alternative to noble metals. We demonstrate remarkably high quality-factor plasmonic resonances in inverse-designed aluminum-nanostructures over a broad spectrum from visible to near-ultraviolet, surpassing those of silver counterparts.

Authors:Xiangchao Zhu/University of California Golam Hossain/University of California Matthew George/Moxtek Arash Farhang/Moxtek Ahmet Cicek/University of California Ahmet Yanik/University of California

Photorefractive optical properties of a strongly-correlated material, 1T-TaS₂ allows many nonlinear nanophotonic devices. Here, we present optical limiters using 1T-TaS₂.

Authors:Weijian Li/Rice University Yuning Wang/Rice University Gururaj Naik/Rice University

We demonstrate nonreciprocal surface plasmon propagation in high-mobility CdO films in the presence of a DC electrical current due to the drift-induced Doppler shift of the plasma frequency. This effect may enable non-magnetic on-chip isolation.

Authors:Yufei Jia/The Pennsylvania State University Alex Grede/The Pennsylvania State University Baomin Wang/The Pennsylvania State University Angela Cleri/The Pennsylvania State University John Murphy/The Pennsylvania State University Jon-Paul Maria/The Pennsylvania State University Noel Giebink/The Pennsylvania State University

Quantum-confined electrons in one-dimensional (1D) metals are described by a Luttinger liquid. Using infrared nano-imaging, we probe the Luttinger liquid plasmons in single walled carbon nanotubes, which behaves qualitatively different from conventional metallic plasmonic systems.

Authors:Sheng Wang/University of California, Berkeley Sihan Zhao/University of California, Berkeley Fanqi Wu/University of Southern California Chongwu Zhou/University of Southern California Feng Wang/University of California, Berkeley

We designed an enhanced plasmonic sensing device based on 2D Ge₂Sb₂Te₅ phase change nanomaterials. The sensing capability has been experimentally demonstrated to be 7000,000 μm/RIU with a detection limit of 10 fM for BSA molecules.

Authors:Yuye Wang/The Chinese University of Hong Kong SHUWEN ZENG/XLIM Research Institute,UMR 7252 CNRS/University of Limoges Aurelian Crunteanu/XLIM Research Institute,UMR 7252 CNRS/University of Limoges Yuanyuan Wei/The Chinese University of Hong Kong Georges Humbert/XLIM Research Institute,UMR 7252 CNRS/University of Limoges Jean-Christophe Orlianges/XLIM Research Institute,UMR 7252 CNRS/University of Limoges Ho-Pui Ho/The Chinese University of Hong Kong

We created a polymer-embedded TiO₂ nanodiscs device with a robust tunable color filters that preserve very sharp spectral bands through spatial variations of the pitch of the meta array.

Authors:Han-Don Um/Harvard University Deokjae Choi/Ulsan National Institute of Science and Technology (UNIST) Amit Solanki/Harvard University Kwanyong Seo/Ulsan National Institute of Science and Technology (UNIST) Fawwaz Habbal/Harvard University

Infrared nanoimaging revealed extremely subwavelength sheet and edge surface phonon-polariton modes on few-nm thick CMOS-compatible Ge-on-SiC resonators. Surface nature of phononic modes on these ultrathin planar structures enables local sensing at the molecular scale.

Authors:Alexander Dubrovkin/Nanyang Technological University, Centre for Disruptive Photonic Technologies Bo Qiang/Nanyang Technological University, Centre for Disruptive Photonic Technologies Teddy Salim/Nanyang Technological University, School of Materials Science and Engineering Donguk Nam/Nanyang Technological University, Centre for OptoElectronics and Biophotonics Nikolay Zheludev/Nanyang Technological University, Centre for Disruptive Photonic Technologies Qijie Wang/Nanyang Technological University, Centre for OptoElectronics and Biophotonics

We propose a novel software-based optical sampling scheme for time-of-flight light detection and ranging using psedo-random binary sequences. Temporal resolution of 1.1 ps, corresponding to a ranging resolution of 165um can be achieved.

Authors:Yu Ishizaki/The University of Tokyo Chao Zhang/The University of Tokyo Sze Set/The University of Tokyo Shinji Yamashita/The University of Tokyo

We realized a novel light detection and ranging whose beam propagates >40 times longer than the depth of focus of Gaussian beam with a beam spot size of <1/3 of that of the collimated beam.

Authors:Chao Zhang/University of Tokyo Sifan Liu/University of Tokyo Zheyuan Zhang/University of Tokyo Lei Jin/University of Tokyo Sze Set/University of Tokyo Shinji Yamashita/University of Tokyo

We perform synchronous laser ranging by dual-comb optical cross-correlation to multiple targets moving along a single optical axis individually. The measurement repeatability reaches 41 nm at 0.1 averaging, satisfying diverse requirements of ultraprecision positioning control.

Authors:Wooram Kim/Korea Advanced Institute of Science and Technology (KAIST) Jaeyoung Jang/Korea Advanced Institute of Science and Technology (KAIST) Seongheum Han/2Korea Institute of Machinery and Materials (KIMM) Young-Jin Kim/Korea Advanced Institute of Science and Technology (KAIST) Seung-Woo Kim/Korea Advanced Institute of Science and Technology (KAIST)

We present a multi-pulse sampling dual-comb interferometer that realizes the multiplication of cross-correlation interferograms and improves the ranging precision. The experimental results demonstrate that a precision of 3.1nm is obtained with 15ms averaging time.

Authors:Siyu Zhou/Tsinghua University Kai Ni/Division of Advanced Manufacturing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China Qian Zhou/Division of Advanced Manufacturing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China Guanhao Wu/Tsinghua University

We present the first demonstration of a photonics-based stepped-frequency radar imaging system with 5.6 GHz bandwidth and thus a centimetre-level range resolution, enabled by a simple optical frequency-shifting loop using an 80-MHz acousto-optic modulator.

Authors:Ziqian Zhang/The University of Sydney Yang Liu/The University of Sydney Maurizio Burla/ETH Zurich Benjamin Eggleton/The University of Sydney

We propose a multi-layered, 2D optical phased array capable of 180°×180° beam steering range without wavelength tuning. Evanescent coupling between half-wavelength spaced waveguides is suppressed below –20 dB through index-mismatch and extreme skin-depth metamaterial waveguides.

Authors:Ziyun Kong/Purdue University Yun Lee/Purdue University Abdullah Noman/Purdue University Yingheng Tang/Purdue University Gregory Chang/Purdue University Minghao Qi/Purdue University

We present a femtosecond laser based interferometer for step-structure surface measurement. The synthetic-wavelength method is adopted to bridge the envelope positioning and carrier phase extraction methods. A three step surface is precisely reconstructed.

Authors:yue wang/Tsinghua University Guangyao Xu/Tsinghua University Shilin Xiong/Tsinghua University Guanhao Wu/Tsinghua University

We demonstrate multiple silicon-nitride nanophotonic elements for on-chip processing of octave-spanning microresonator frequency combs. Dichroic filters, multimode interferometers, and tunable add-drop microring filters are shown along with soliton microcombs generated on a bilayer photonic chip.

Authors:Ashutosh Rao/National Institute of Standards and Technology Gregory Moille/National Institute of Standards and Technology Xiyuan Lu/National Institute of Standards and Technology Davide Sacchetto/Ligentec Michael Geiselmann/Ligentec Michael Zervas/Ligentec Scott Papp/National Institute of Standards and Technology John Bowers/University of California, Santa Barbara Kartik Srinivasan/National Institute of Standards and Technology

A high-resolution FT spectrometer consists of a cascaded microring resonator and an MZI array is demonstrated and achieved a high resolution of 0.74 nm and bandwidth of 20 nm. It has high potential in biochemical sensing applications.

Authors:HUIHUI ZHU/NTU Shaonan Zheng/AStar Jun Zou/NTU Hong Cai/AStar zhenyu Li/NTU Ai Qun Liu/NTU

A dual-laser indium phosphide photonic integrated circuit for precision spectroscopy lidar was designed and fabricated. A stabilization experiment demonstrated a twentyfold improvement in the long-term frequency stability of the master laser.

Authors:Joseph Fridlander/University of California Santa Barbara Victoria Rosborough/University of California Santa Barbara Fengqiao Sang/University of California Santa Barbara Michael Nickerson/University of California Santa Barbara Jeffrey Chen/NASA-Goddard Kenji Numata/NASA-Goddard Paul Verrinder/University of California Santa Barbara Fabrizio Gambini/University of California Santa Barbara Sergio Pinna/University of California Santa Barbara Stephan Kawa/NASA-Goddard Mark Stephen/NASA-Goddard larry coldren/University of California Santa Barbara Jonathan Klamkin/University of California Santa Barbara

We experimentally discovered and theoretically explain a novel turnkey regime for operation of soliton microcombs, wherein a new operating point enables the direct access of the soliton state by simple turn-on of the pump laser.

Authors:Boqiang Shen/California Institute of Technology Lin Chang/University of California Santa Barbara Junqiu Liu/Swiss Federal Institute of Technology Lausanne (EPFL) Heming Wang/California Institute of Technology Qi-Fan Yang/California Institute of Technology Chao Xiang/University of California Santa Barbara Rui Ning Wang/Swiss Federal Institute of Technology Lausanne (EPFL) Jijun He/Swiss Federal Institute of Technology Lausanne (EPFL) Tianyi Liu/Swiss Federal Institute of Technology Lausanne (EPFL) Weiqiang Xie/University of California Santa Barbara Joel Guo/University of California Santa Barbara David Kinghorn/University of California Santa Barbara LUE WU/California Institute of Technology Qing-Xin Ji/California Institute of Technology Tobias Kippenberg/Swiss Federal Institute of Technology Lausanne (EPFL) Kerry Vahala/California Institute of Technology John Bowers/University of California Santa Barbara

On-chip optical frequency comb generation using recursive electro-optic modulation is demonstrated. The chip, fabricated on IME 180 nm SOI process, is used to generate a 120 GHz wide frequency comb with 10 GHz tooth-spacing.

Authors:Mohamad Hossein Idjadi/University of Pennsylvania Shermin Arab/University of Pennsylvania Firooz Aflatouni/University of Pennsylvania

We introduce (partial) correlation coefficients to explore the relation between the driving signal reflection on traveling wave electrodes and the performance variation of silicon Mach-Zehnder modulators. Relevant fabrication variation scenarios and potential remedies are discussed.

Authors:Zhaobang Zeng/Nanjing University peiyan zhao/Nanjing University Nan Yang/Nanjing University Qianyi Gao/Nanjing University Bo Tang/Chinese Academy of Science Zhihua Li/Chinese Academy of Science Jiang Yan/North China University of Technology Wei Jiang/Nanjing University

We demonstrate an on-chip photonic spectrometer exploiting tailored disorder with
broadband fiber-to-chip couplers and superconducting single-photon detectors. Probe signals over
a wide wavelength range are faithfully reconstructed with low input power down to -111.5 dBm.

Authors:Wladick Hartmann/University of Muenster Paris Varytis/Humboldt University Berlin Helge Gehring/University of Muenster Nicolai Walter/University of Muenster Fabian Beutel/University of Muenster Kurt Busch/Humboldt University Berlin Wolfram Pernice/University of Muenster