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Title

Asymmetric and delayed activation of side-modes in multimode semiconductor lasers with optical feedback

AuthorsBuldú, Javier M.; Rogister, Fabien; Trull, J.; Serrat, Carles; Torrent, M. C.; García-Ojalvo, Jordi; Mirasso, Claudio R.
KeywordsSemiconductor laser dynamics
Low-frequency fluctuations
Multimode lasers
Optical feedback
Lang–Kobayashi equations
Issue DateDec-2002
PublisherInstitute of Physics Publishing
CitationJournal of Optics B: Quantum and Semiclassical Optics 4(6): 415-420 (2002)
AbstractWe study the multimode dynamics of a semiconductor laser with optical feedback operating in the low-frequency fluctuation regime. A multimode extension of the Lang–Kobayashi (LK) model shows, in agreement with experimental observations, that the low-frequency power dropouts exhibited by the main modes are accompanied by sudden, asymmetric, activations of dormant longitudinal side modes. Furthermore, these activations are delayed with respect to the dropouts of the active modes. In order to satisfactorily reproduce both the asymmetric activation of side modes and their delay with respect to the dropouts, the generalized LK model has to include a parabolic gain profile, together with a frequency shift of the gain curve with carrier population.
Description6 pages, 4 figures.
Publisher version (URL)http://dx.doi.org/10.1088/1464-4266/4/6/308
URIhttp://hdl.handle.net/10261/15312
DOI10.1088/1464-4266/4/6/308
ISSN1464-4266
Appears in Collections:(IFISC) Artículos
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