dorsal/arxiv
View SchemaOptical vernier technique for in-situ measurement of the length of long Fabry-Perot cavities
| Authors | M. Rakhmanov, M. Evans, H. Yamamoto |
|---|---|
| Categories | |
| ArXiv ID | physics/9809027 |
| URL | https://arxiv.org/abs/physics/9809027 |
| DOI | 10.1088/0957-0233/10/3/013 |
| Journal | Meas. Sci. Technol. 10 (1999) 190-194 |
Abstract
We propose a method for in-situ measurement of the length of kilometer size Fabry-Perot cavities in laser gravitational wave detectors. The method is based on the vernier, which occurs naturally when the laser 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-Perot cavity in the Caltech 40m Interferometer and discuss the accuracy of the technique.
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"abstract": "We propose a method for in-situ measurement of the length of kilometer size\nFabry-Perot cavities in laser gravitational wave detectors. The method is based\non the vernier, which occurs naturally when the laser incident on the cavity\nhas a sideband. By changing the length of the cavity over several wavelengths\nwe obtain a set of carrier resonances alternating with sideband resonances.\n From the measurement of the separation between the carrier and a sideband\nresonance we determine the length of the cavity. We apply the technique to the\nmeasurement of the length of a Fabry-Perot cavity in the Caltech 40m\nInterferometer and discuss the accuracy of the technique.",
"arxiv_id": "physics/9809027",
"authors": [
"M. Rakhmanov",
"M. Evans",
"H. Yamamoto"
],
"categories": [
"physics.ins-det"
],
"doi": "10.1088/0957-0233/10/3/013",
"journal_ref": "Meas. Sci. Technol. 10 (1999) 190-194",
"title": "Optical vernier technique for in-situ measurement of the length of long Fabry-Perot cavities",
"url": "https://arxiv.org/abs/physics/9809027"
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