Determination of the vacuum optomechanical coupling rate using frequency noise calibration
Abstract
The strength of optomechanical interactions in a cavity optomechanical system can be quantified by a vacuum coupling rate analogous to cavity quantum electrodynamics. This single figure of merit removes the ambiguity in the frequently quoted coupling parameter defining the frequency shift for a given mechanical displacement, and the effective mass of the mechanical mode. Here we demonstrate and verify a straightforward experimental technique to derive the vacuum optomechanical coupling rate. It only requires applying a known frequency modulation of the employed electromagnetic probe field and knowledge of the mechanical oscillator's occupation. The method is experimentally verified for a micromechanical mode in a toroidal whispering-gallery-resonator and a nanomechanical oscillator coupled to a toroidal cavity via its near field.
Keywords
Cite
@article{arxiv.1009.4231,
title = {Determination of the vacuum optomechanical coupling rate using frequency noise calibration},
author = {Michael Gorodetsky and Albert Schliesser and Georg Anetsberger and Samuel Deleglise and Tobias J. Kippenberg},
journal= {arXiv preprint arXiv:1009.4231},
year = {2015}
}
Comments
11 pages, 2 figures