Feedback noise in single-mode semiconductor lasers

Daan Lenstra, Julius S. Cohen

Research output: Contribution to journalConference articleAcademicpeer-review

11 Citations (Scopus)


In nearly every application of semiconductor lasers some externally reflected light is coupled back into the laser with a certain time delay. The noise and coherence properties are very sensitive to optical feedback. Coupling to external cavity modes induces frequency shifts, line-narrowing and broadening, competition among different external cavity modes, or dynamical instabilities. Strongly dispersive gain makes instabilities efficiently generate phaser noise, leading to coherence collapse. We present an overview of these phenomena and their theoretical descriptions.

Original languageEnglish
Pages (from-to)245-258
Number of pages14
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1 Jan 1991
EventLaser Noise - Boston, MA, USA
Duration: 5 Nov 19906 Nov 1990


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