Frequency stabilization of laser diode light sources in satellite-to-satellite laser interferometers

S. Maehara; Y. Kurosaki; T. Sato; M. Ohkawa; T. Maruyama; T. Yoshino; H. Kunimori; M. Hosokawa; H. Ito; Y. Li; S. Nagano; S. Kawamura

doi:10.1117/12.645751

28 February 2006 Frequency stabilization of laser diode light sources in satellite-to-satellite laser interferometers

S. Maehara, Y. Kurosaki, T. Sato, M. Ohkawa, T. Maruyama, T. Yoshino, H. Kunimori, M. Hosokawa, H. Ito, Y. Li, S. Nagano, S. Kawamura

Author Affiliations +

Proceedings Volume 6115, Physics and Simulation of Optoelectronic Devices XIV; 611529 (2006) https://doi.org/10.1117/12.645751
Event: Integrated Optoelectronic Devices 2006, 2006, San Jose, California, United States

Abstract

The present work discusses methods of stabilizing the frequencies of commercially-available laser diodes. Laser diodes are generally compact and long-lived. The frequency stability, which makes them ideal for onboard laser interferometer light-sources, in applications such as the satellite-to-satellite tracking systems used to verify fluctuations in earth's gravity field, which, in turn, indicate other critical changes in the environment, is the key characteristic of this work. We used the devices typically operating at 780nm, and their frequencies can be stabilized using either of two systems; one, employing the Doppler-free absorption line of Rb atoms and another, sing the Faraday effect of the Rb absorption line. In both cases, the use of the proper modulation frequency and amplitude improved frequency stability, overall, attaining 2.05×10^-12 and 2.73×10^-11, respectively, in the square root of the Allan variance, by measuring the beat-note between two independently-stabilized laser diodes.

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S. Maehara, Y. Kurosaki, T. Sato, M. Ohkawa, T. Maruyama, T. Yoshino, H. Kunimori, M. Hosokawa, H. Ito, Y. Li, S. Nagano, and S. Kawamura "Frequency stabilization of laser diode light sources in satellite-to-satellite laser interferometers", Proc. SPIE 6115, Physics and Simulation of Optoelectronic Devices XIV, 611529 (28 February 2006); https://doi.org/10.1117/12.645751

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