Mode switching in ring lasers with delayed optical feedback

We have demonstrated that a weak external optical feedback with delay can lead to the switching of the counterpropagating modes in a ring laser. The period of this switching is almost equal to the doubling delay time. This time should be longer than any system characteristic time. The equations desc...

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Bibliographic Details
Published inCommunications in nonlinear science & numerical simulation Vol. 23; no. 1-3; pp. 71 - 77
Main Author Dontsov, A.A.
Format Journal Article
LanguageEnglish
Published 01.06.2015
Subjects
Delay
Mathematical analysis
Mathematical models
Optical feedback
Quantum dots
Ring lasers
Semiconductor lasers
Switching
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Summary:We have demonstrated that a weak external optical feedback with delay can lead to the switching of the counterpropagating modes in a ring laser. The period of this switching is almost equal to the doubling delay time. This time should be longer than any system characteristic time. The equations describing the ring laser with the delayed optical feedback have been obtained and the analytical formula for the necessary external feedback strength was derived. We have shown that the effect can take place in semiconductor lasers on quantum dots.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:1007-5704
DOI:10.1016/j.cnsns.2014.10.035