• Technical Conference: 

    09 – 14 May 2021

  • Exhibition: 

    09 – 14 May 2021

SC362 - Cavity Optomechanics: Fundamentals and Applications of Controlling and Measuring Nano- and Micro-mechanical Oscillators with Laser Light

Monday, 10 May
13:30 - 17:30

Short Course Level: Beginner


Tobias Kippenberg; Ecole Polytechnique Federale de Lausanne, Switzerland

Short Course Description:

Radiation pressure denotes the force that optical fields exert and which have wide ranging applications in both fundamental science and applications such as Laser cooling or optical tweezers. Radiation pressure can, however, also have a profound influence on micro- and nanophotonic devices, due to the fact that radiation pressure can couple optical and mechanical modes. This optomechanical coupling gives rise to a host of new phenomena and applications in force, displacement and mass sensing. This course is intended to give an introduction of the Physics and Applications of cavity optomechanics and highlight the rapid developments in this emerging field. Optomechanical coupling can be used to both cool and amplify mechanical motion and thereby allow new light driven photon clocks. Optomechanical refrigeration of mechanical modes gives insights into the quantum limits of mechanical motion. In addition, radiation pressure coupling enables new ways of processing light while optically enabling optical mixers, delay lines or storage elements. Moreover, the basic limitations of optomechanical displacement measurements, due to quantum noise and practical laser phase noise limitations, will be reviewed, relevant across a wide range of sensing experiments.

The course will make contact to practical applications of optomechanics in Metrology (force sensors, mass sensors and light driven optical clocks) and review fundamental design principles of optomechanical coupling and the design of high Q mechanical oscillators. The use of finite element simulations will be covered.

Short Course Benefits:

This course should enable participants to:

  • Explain gradient and scattering light forces in microcavities and micromechanical systems

  • Design high –Q nano-and micro- mechanical oscillators (finite element modeling, FEM)

  • Discuss the fundamental limits of mechanical Q in NEMS/MEMS

  • Describe of the fundamental and practical limits of displacement sensors

  • Summarize Applications of optomechanics in mass and force sensing

  • Explain the basic optomechanical phenomena (amplification, cooling)

  • Discuss the standard quantum limit (SQL)

  •  Characterize radiation pressure driven oscillations in terms of fundamental oscillator metrics

  • Define Phase and frequency noise of oscillators

  • Know the influence of phase and amplitude noise of a wide variety of laser systems (fiber lasers, TiSa, diode lasers) in optomechanical systems

Short Course Audience:

This course is intended for physicists and optical and electrical engineers desiring both focused fundamental knowledge of cavity optomechanical coupling (i.e., radiation pressure coupling of light and NEMS/MEMS) but also a view of emerging applications of this new technology. The instruction will be at a level appropriate for graduate students and will assume some basic knowledge of laser.

Instructor Biography:

Tobias J. Kippenberg is Associate Professor of Physics and Electrical Engineering at EPFL and leads the Laboratory of Photonics and Quantum Measurement. He obtained his BA at the RWTH Aachen, and MA and PhD at the California Institute of Technology (Caltech in Pasadena, USA).  From 2005- 2009 he lead an Independent Research Group at the MPI of Quantum Optics and obtained his Habilitation from the LMU with T.W. Haensch. His research area are the Physics and Application of ultra high Q resonators in Metrology and Quantum Measurements of mechanical motion (cavity optomechanics). Tobias Kippenberg is alumni of the “Studienstiftung des Deutschen Volkes” and winner of the 8th EU Contest for Young Scientists (1996) for his invention of an “Infrared-microwave radiation ice condition sensor for cars. For his invention of “chip-scale frequency combs” he is co-recipient of the Helmholtz Price for Metrology (2009). Moreover he is recipient of the EFTF Young Investigator Award (2010) and the EPS Fresnel Prize (2009)

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