• Technical Conference: 

    09 – 14 May 2021

  • Exhibition: 

    10 – 14 May 2021

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AM3E

Frequency Comb Applications

Presider: Matthew Simons, NIST

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Presentations

Designer Terahertz Frequency Comb Generation (AM3E.1)
Presenter: Dominik Theiner, TU Wien

We present a simple method to generate almost arbitrary Terahertz frequency combs, between 0.1 and 3.6 THz with single line linewidths of 10 MHz, based on a robust optical system built from standard fiber-optic components.

Authors:Dominik Theiner, TU Wien / Benedikt Limbacher, TU Wien / Juraj Darmo, TU Wien / Karl Unterrainer, TU Wien

  Paper

Portable Optical Two-way Time Transfer in Outdoor Atmospheric Link With CPLD-Based Time Codec (AM3E.2)
Presenter: Junwei Ren, Univ. of Elect. Sci. and Tech. of China

We demonstrated a portable optical two-way time transfer scheme over a 120-m outdoor atmospheric link. The measured root-mean-square (RMS) fluctuation of the time deference between the two sites is about 81 ps within 11 hours.

Authors:Junwei Ren, Univ. of Elect. Sci. and Tech. of China / Bisong Pan, Univ. of Elect. Sci. and Tech. of China / Ze Li, Univ. of Elect. Sci. and Tech. of China / Ke Liu, Univ. of Elect. Sci. and Tech. of China / Jianye Zhao, Peking University / Dong Hou, Univ. of Elect. Sci. and Tech. of China

  Paper

Dual Frequency Comb Applications in Atmospheric Sensing, Ranging, and Timing (AM3E.3)
Presenter: Nathan Newbury, National Inst of Standards & Technology

Coherent heterodyne laser measurements can provide high sensitivity and precision. With coherent frequency combs, these advantages can be coupled with high optical bandwidths leading to new capabilities in atmospheric sensing, optical ranging and time transfer.

Authors:Nathan Newbury, National Inst of Standards & Technology

Fiber Laser Based Dual-Comb Spectroscopy With Dynamically Controlled Spectral Resolution (AM3E.4)
Presenter: Fabrizio Giorgetta, National Inst of Standards & Technology

A versatile method of dual-comb spectroscopy is presented. Digital control of the comb frequencies enables dynamically adaptable spectrometer resolution to efficiently match a sample’s feature width, optimizing the system for new applications.

Authors:Fabrizio Giorgetta, National Inst of Standards & Technology / Jean-Daniel Deschênes, Octosig Consulting / Ian Coddington, National Inst of Standards & Technology / Nathan Newbury, National Inst of Standards & Technology / Esther Baumann, National Inst of Standards & Technology

  Paper

Multiheterodyne Differential Spectroscopy Using Dual-Comb Generation Based on a Dual-Drive Mach Zehnder Modulator (AM3E.5)
Presenter: Dragos Poiana, University Carlos III of Madrid

We present a multiheterodyne spectroscopy system that is able to measure the first derivative absorption characteristics with a single dual drive Mach Zehnder modulator and we apply the technique to read HCN gas cell.

Authors:Dragos Poiana, University Carlos III of Madrid / Pedro Martín-Mateos, University Carlos III of Madrid / Jose Antonio Garcia Souto, University Carlos III of Madrid

  Paper

EOM-Based Repetition Rate Modulation for Dual-Comb Coherent Anti-Stokes Raman Scattering Spectroscopy (AM3E.6)
Presenter: Yujia Zhang, Tsinghua University

We present an EOM-based repetition rate modulation method for dual-comb coherent anti-Stokes Raman scattering spectroscopy. The duty cycle of the system reaches 90% and the refresh rate is 18 kHz.

Authors:Yujia Zhang, Tsinghua University / MINJIAN LU, Tsinghua University / Tao Wu, Tsinghua University / YAN LI, Tsinghua University / HAOYUN WEI, Tsinghua University

  Paper

Calibration of Electronic Distance Meters Using Autocorrelation of Femtosecond Pulses (AM3E.7)
Presenter: Osama Terra, National Institute of Standards, Egypt

Calibration of Electronic Distance Meters is crucial since they are used in surveying and construction. A method is proposed here to calibrate EDMs using the autocorrelation of femtosecond pulses generated from an Optical Frequency Comb.

Authors:Osama Terra, National Institute of Standards, Egypt / Haitham M. Hussein, National Institute of Standards, Egypt / Hatem Hussein, National Institute of Standards, Egypt / Mohamed Medhat, Faculty of science- Ain Shams University

  Paper