High-sensitivity optical measurement of mechanical Brownian motion

We describe an experiment in which a laser beam is sent into a high-finesse optical cavity with a mirror coated on a mechanical resonator. We show that the reflected light is very sensitive to small mirror displacements. We have observed the Brownian motion of the resonator with a very high sensitiv...

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Bibliographic Details
Published inarXiv.org
Main Authors Hadjar, Y, Cohadon, P F, Aminoff, C G, Pinard, M, Heidmann, A
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 03.09.1999
Subjects
Brownian motion
Cavity resonators
Laser beams
Optical measurement
Resonators
Sensitivity
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Summary:We describe an experiment in which a laser beam is sent into a high-finesse optical cavity with a mirror coated on a mechanical resonator. We show that the reflected light is very sensitive to small mirror displacements. We have observed the Brownian motion of the resonator with a very high sensitivity.
ISSN:2331-8422
DOI:10.48550/arxiv.9901056