Monitor of mirror distance of Fabry-Perot cavity by the use of stabilized femtosecond laser comb

Radek Šmíd; Jan Ježek; Zdeněk Buchta; Martin Čížek; Břetislav Mikel; Josef Lazar; Ondřej Číp

doi:10.1117/12.881891

14 December 2010 Monitor of mirror distance of Fabry-Perot cavity by the use of stabilized femtosecond laser comb

Radek Šmíd, Jan Ježek, Zdeněk Buchta, Martin Čížek, Břetislav Mikel, Josef Lazar, Ondřej Číp

Proceedings Volume 7746, 17th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 77460I (2010) https://doi.org/10.1117/12.881891
Event: 17th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2010, Liptovsky Jan, Slovakia

Abstract

The use of an ultra low expansion cavity plays a crucial role in laser stabilization, and in atomic or ion clocks. We propose an easy method of precise monitoring of optical path distance in Fabry-Perot interferometer. The spacing of mirrors of the Fabry-Perot interferometer in ambient air represents the optical path distance referenced to stable optical frequency of the femtosecond mode-locked laser. With the help of highly selective optical filter it is possible to get only a few of separate spectral components of laser comb. Optical path distance is transfered to optical frequency of the comb component and through the repetition frequency of the laser to the radio-frequency domain. Repetition frequency of the laser can be monitored with the uncertainty referenced to the any local oscillator or through the GPS to the atomic clock standard. By using this mehod we are able to measure and lock the Fabry-Perot cavity to a selected single component of optical frequency comb an to measure the optical path distance directly in rf domain.

Citation Download Citation

Radek Šmíd, Jan Ježek, Zdeněk Buchta, Martin Čížek, Břetislav Mikel, Josef Lazar, and Ondřej Číp "Monitor of mirror distance of Fabry-Perot cavity by the use of stabilized femtosecond laser comb", Proc. SPIE 7746, 17th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 77460I (14 December 2010); https://doi.org/10.1117/12.881891

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