Feedback induced instabilities in a quantum dot semiconductor laser

Carroll, Olwen and O'Driscoll, Ian and Hegarty, Stephen P. and Huyet, Guillaume and Houlihan, John and Viktorov, Evgeny A. and Mandel, Paul (2006) Feedback induced instabilities in a quantum dot semiconductor laser. Optics Express, 14 (22). pp. 10831-10837. ISSN 1094-4087

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We analyse the properties of GaAs based quantum dot semiconductor lasers emitting near 1310 nm. The line-width enhancement factor is shown to depend strongly on device temperature, ranging from 1.5 at 20° C to 5 at 50° C. With optical feedback from a distant reflector, devices remained stable at 20° C but displayed a range of instabilities at 50° C, including irregular power drop-outs and periodic pulsations, before entering a chaotic regime. Such dynamical features are unique to quantum dot lasers - quantum well lasers are significantly more unstable under optical feedback making such a clear route to chaos difficult to observe.

Item Type: Article
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100/3107
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Depositing User: Admin SSL
Date Deposited: 19 Oct 2022 23:08
Last Modified: 06 Aug 2023 22:25

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