Published March 1999
| public
Journal Article
Open
An optical vernier technique for in situ measurement of the length of long Fabry-Pérot cavities
- Creators
- Rakhmanov, M.
- Evans, M.
- Yamamoto, H.
Abstract
We propose a method for in situ measurement of the length of kilometre-sized Fabry-Pérot cavities in laser gravitational wave detectors. The method is based on the vernier, which occurs naturally when the laser beam incident on the cavity has a sideband. By changing the length of the cavity over several wavelengths we obtain a set of carrier resonances alternating with sideband resonances. From the measurement of the separation between the carrier and a sideband resonance we determine the length of the cavity. We apply the technique to the measurement of the length of a Fabry-Pérot cavity in the Caltech 40m interferometer and discuss the accuracy of the technique.
Additional Information
Copyright © Institute of Physics and IOP Publishing Limited 1999. Received 19 May 1998, in final form 12 November 1998, accepted for publication 2 December 1998. Print publication: Issue 3 (March 1999). We are very grateful to G Hu for setting up the data acquisition for the experiment. We also thank S Whitcomb, A Lazzarini, J Camp and A Arodzero for discussions and their comments on the paper. This work is supported by the National Science Foundation of the USA under cooperative agreement PHY-9210038.Files
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Additional details
- Eprint ID
- 10202
- Resolver ID
- CaltechAUTHORS:RAKRAKmst99
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2008-04-16Created from EPrint's datestamp field
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2021-11-08Created from EPrint's last_modified field