AI Article Synopsis
- The study focuses on utilizing a narrow linewidth 1 kHz laser to measure the free spectral range of a fiberized Fabry-Perot etalon with exceptional accuracy (sub-Hz, or 10^(-8)).
- The technique improves upon the Pound-Drever-Hall error signal method by employing a frequency-swept narrow linewidth laser using an acousto-optic modulator.
- This enhanced accuracy allows for detailed analysis of the long-term drift and polarization dependence of the fiberized etalon's free spectral range.
Article Abstract
In this work a narrow linewidth (1 kHz) laser source is used to measure the free spectral range of a fiberized Fabry-Perot etalon with sub-Hz accuracy (10(-8)). A previously demonstrated technique based on the Pound-Drever-Hall error signal is improved in accuracy by the use of a narrow linewidth laser swept in frequency via an acousto-optic modulator, or single sideband generation. The sub-Hz (10(-8)) accuracy attained enables the characterization of both the long-term drift and the polarization dependence of the free spectral range of the fiberized etalon.
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| http://dx.doi.org/10.1364/OE.18.011264 | DOI Listing |
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