Frequency stabilization of a semiconductor laser using both Rb saturated absorption profiles and double optical feedback systems

K. Nakano; S. Maehara; M. Yanagisawa; K. Doi; T. Sato; M. Ohkawa; T. Maruyama; S. Kawamura

doi:10.1117/12.756173

24 January 2008 Frequency stabilization of a semiconductor laser using both Rb saturated absorption profiles and double optical feedback systems

K. Nakano, S. Maehara, M. Yanagisawa, K. Doi, T. Sato, M. Ohkawa, T. Maruyama, S. Kawamura

Author Affiliations +

Proceedings Volume 6829, Advanced Materials and Devices for Sensing and Imaging III; 68290R (2008) https://doi.org/10.1117/12.756173
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

The precise interferometric systems employed in today's artificial satellites require semiconductor lasers of the highest callibur. But, one particularly large obstacle has stood in the way of their broad application; the stabilization of their oscillation frequencies. While a number of different approaches have been tested, none have provided overall, long-term stability. Most recently, we used a Doppler-free absorption line of Rb atoms with a precision temperature controller and an improved laser mount; in this instance, relative optical frequency stability rated 9.07x10^-13≤&sgr;(2,&tgr;)≤7.54x10^-10, in averaging time for 0.01s≤&tgr;≤23s. By introducing optical feedback, which narrows the laser's linewidth, we obtained improved frequency stability.

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K. Nakano, S. Maehara, M. Yanagisawa, K. Doi, T. Sato, M. Ohkawa, T. Maruyama, and S. Kawamura "Frequency stabilization of a semiconductor laser using both Rb saturated absorption profiles and double optical feedback systems", Proc. SPIE 6829, Advanced Materials and Devices for Sensing and Imaging III, 68290R (24 January 2008); https://doi.org/10.1117/12.756173

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