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Published December 1980 | Published
Journal Article Open

Generation and Quenching of Intensity Pulsations in Semiconductor Lasers Coupled to External Cavities

Abstract

The behavior of self-pulsing and nonpulsing lasers coupled to external cavities is investigated experimentally and theoretically. We investigate the dependence of the pulsation characteristics on the external cavity length using a saturable absorber model for self-pulsing lasers. It was found that quenching of self-pulsation occurs only for a certain limited range of external cavity length, and the frequencies of external-cavity induced pulsations lies within a certain range determined by the coupling coefficient. Small-signal analysis allows these ranges to be derived analytically. Hitherto, complex pulsation phenomena can be explained very intuitively by interpreting the combined laser-external cavity system as a microwave oscillator with a limited gain band and discrete mode structure.

Additional Information

© 1980 IEEE. Manuscript received December 4, 1979; revised July 24, 1980. This work was supported by the National Science Foundation under Grant ENG-7604927-AO4, the Office of Naval Research under Contract N00014-76-0322, and by DARPA, and monitored by NRL under Contract N00173-78-C-0192.

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August 22, 2023
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