Frequency stabilization of DBR diode laser against Cs absorption lines at 852 nm using the modulation transfer method

Fabrizio Bertinetto; Paolo Cordiale; Gianluca Galzerano; Elio Bava

doi:10.1117/12.432844

29 June 2001 Frequency stabilization of DBR diode laser against Cs absorption lines at 852 nm using the modulation transfer method

Fabrizio Bertinetto, Paolo Cordiale, Gianluca Galzerano, Elio Bava

Author Affiliations +

Proceedings Volume 4430, ROMOPTO 2000: Sixth Conference on Optics; (2001) https://doi.org/10.1117/12.432844
Event: ROMOPTO 2000: Sixth Conference on Optics, 2000, Bucharest, Romania

Abstract

Preliminary results on absolute frequency stabilization of Distributed Bragg Reflector (DBR) diode-lasers with emission wavelength at 852 nm will be reported. Saturated absorption D₂ lines of cesium atom have been adopted as a frequency reference and the nonlinear spectroscopy method of Modulation Transfer has been used to lock the laser frequency against the resonance. From the preliminary results on the beat signal between two independent laser systems a relative frequency stability of 10^-11 has been reached at an integration time of 0.1 s. The analysis on the obtained signal to noise ratio shows a frequency noise floor in the order of approximately 10^-12 which should be achieved in an integration time of 1 s.

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Fabrizio Bertinetto, Paolo Cordiale, Gianluca Galzerano, and Elio Bava "Frequency stabilization of DBR diode laser against Cs absorption lines at 852 nm using the modulation transfer method", Proc. SPIE 4430, ROMOPTO 2000: Sixth Conference on Optics, (29 June 2001); https://doi.org/10.1117/12.432844

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