Frequency stabilization of a semiconductor laser using the Rb saturated absorption spectroscopy

Y. Ohta; S. Maehara; K. Hasebe; Y. Kurosaki; T. Sato; M. Ohkawa; T. Maruyama; T. Tsubokawa

doi:10.1117/12.645726

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28 February 2006 Frequency stabilization of a semiconductor laser using the Rb saturated absorption spectroscopy

Y. Ohta, S. Maehara, K. Hasebe, Y. Kurosaki, T. Sato, M. Ohkawa, T. Maruyama, T. Tsubokawa

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Proceedings Volume 6115, Physics and Simulation of Optoelectronic Devices XIV; 61150P (2006) https://doi.org/10.1117/12.645726
Event: Integrated Optoelectronic Devices 2006, 2006, San Jose, California, United States

Abstract

We report on the stabilization of a semiconductor laser's frequency, using Rb absorption lines. In order to improve overall frequency stability within our system, we adjusted the setup used in Rb- saturated absorption spectroscopy, and optimized modulation parameters such as modulation - frequency and -width, to more accurately detect the error signal. When we stabilized laser frequency using a Doppler-free absorption line of Rb atoms, a time-constant of 0.01sec, and a modulation frequency of 7.77kHz, relative optical frequency stability of 2.12×10^-12≤σ(2,τ)≤5.88×10^-11 was achieved, in averaging time for 0.04s≤τ≤65s.

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Y. Ohta, S. Maehara, K. Hasebe, Y. Kurosaki, T. Sato, M. Ohkawa, T. Maruyama, and T. Tsubokawa "Frequency stabilization of a semiconductor laser using the Rb saturated absorption spectroscopy", Proc. SPIE 6115, Physics and Simulation of Optoelectronic Devices XIV, 61150P (28 February 2006); https://doi.org/10.1117/12.645726

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