Opto-Mechanics of deformable Fabry-Perot Cavities
Constanze Metzger, Ivan Favero, Alexander Ortlieb, Khaled Karrai
TL;DR
This paper explores the opto-mechanical interactions in a deformable Fabry-Perot cavity with a spring-mounted mirror, focusing on how light-induced forces influence the cavity's mechanical fluctuations and presenting a classical model for photo-thermal effects.
Contribution
It introduces a classical model for opto-mechanical coupling in deformable cavities and analyzes photo-thermal force effects on mirror dynamics.
Findings
Photo-thermal forces dominate the opto-mechanical response.
The model predicts controllable mechanical fluctuations.
Experimental data supports the classical photo-thermal force analysis.
Abstract
We investigated the opto-mechanical properties of a Fabry-Perot cavity with a mirror mounted on a spring. Such a structure allows the cavity length to change elastically under the effect of light induced forces. This opto-mechanical coupling is exploited to control the amplitude of mechanical fluctuation of the mirror. We present a model developed in the classical limit and discuss data obtained in the particular case for which photo-thermal forces are dominant.
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