Optomechanical characterization of acoustic modes in a mirror
- 30 September 2003
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 68 (3) , 033823
- https://doi.org/10.1103/physreva.68.033823
Abstract
We present an experimental study of the internal mechanical vibration modes of a mirror. We determine the frequency repartition of acoustic resonances via a spectral analysis of the Brownian motion of the mirror, and the spatial profile of the acoustic modes by monitoring their mechanical response to a resonant radiation pressure force swept across the mirror surface. We have applied this technique to mirrors with cylindrical and plano-convex geometries, and compared the experimental results to theoretical predictions. We have in particular observed the Gaussian modes predicted for plano-convex mirrors.Keywords
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