| Issue |
Europhys. Lett.
Volume 47, Number 5, September I 1999
|
|
|---|---|---|
| Page(s) | 545 - 551 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i1999-00422-6 | |
| Published online | 01 September 2002 | |
High-sensitivity optical measurement of mechanical Brownian motion
Laboratoire Kastler Brossel , case 74 4 place Jussieu, F-75252 Paris Cedex 05, France
Received:
16
April
1999
Accepted:
1
July
1999
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 corresponding to a minimum observable displacement of 
.
PACS: 05.40.Jc – Brownian motion / 04.80.Nn – Gravitational wave detectors and experiments / 42.50.Lc – Quantum fluctuations, quantum noise, and quantum jumps
© EDP Sciences, 1999
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