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Optical Engineering

Linewidth instability in a semiconductor laser due to feedback from a ring passive phase conjugate mirror
Author(s): Bruce W. Liby; David Statman; John Gerard McInerney
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Paper Abstract

The effect of low power, photorefractive phase-conjugate feedback on the spectrum of a semiconductor laser is considered. Relaxation oscillations are observed at 4.2 GHz on either side of the fundamental lasing mode. Unstable external cavity mode features appear underneath the envelope of the relaxation oscillations. A further increase in feedback results in dramatic linewidth broadening. The experimental results are found to be similar to the effects observed with conventional reflectors and they closely agree with recent theoretical predictions.

Paper Details

Date Published: 1 April 1999
PDF: 5 pages
Opt. Eng. 38(4) doi: 10.1117/1.602102
Published in: Optical Engineering Volume 38, Issue 4
Show Author Affiliations
Bruce W. Liby, Air Force Phillips Lab. (United States)
David Statman, Allegheny College (United States)
John Gerard McInerney, National Univ. of Ireland (United States)

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