Optical Feedback Stabilization Of Laser Diodes For Rotation Sensing Applications

Daniel J. Stech; Daniel J. Biezad

doi:10.1117/12.937558

11 March 1987 Optical Feedback Stabilization Of Laser Diodes For Rotation Sensing Applications

Daniel J. Stech, Daniel J. Biezad

Proceedings Volume 0719, Fiber Optic Gyros: 10th Anniversary Conf; (1987) https://doi.org/10.1117/12.937558
Event: Cambridge Symposium-Fiber/LASE '86, 1986, Cambridge, MA, United States

Abstract

Reduced cost, greater reliability, and compatibility with integrated optics are some of the advantages gained by incorporating semiconductor lasers into the design of passive resonant ring laser gyroscopes (PRRLG). Unfortunately, the large spectral linewidth typical of semiconductor lasers greatly limits the sensitivity of such a configuration. This research details the modification of a laser diode to obtain a stable, single mode, narrow spectral output using an optical feedback configuration compatible with the input optics to a PRRLG. Spectral narrowing and modal dynamics of the external coupled cavity laser were measured. By temperature stabilization and optical feedback a free running linewidth of 60 MHz was reduced to approximately 13 MHz or less and was maintained in a single mode for over 20 minutes.

Citation Download Citation

Daniel J. Stech and Daniel J. Biezad "Optical Feedback Stabilization Of Laser Diodes For Rotation Sensing Applications", Proc. SPIE 0719, Fiber Optic Gyros: 10th Anniversary Conf, (11 March 1987); https://doi.org/10.1117/12.937558

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