Spatial decorrelation in broad-area edge-emitting semiconductor amplifiers

We analyze experimentally the spatio-temporal dynamics of the transverse structures appearing in broad area edge-emitting semiconductor amplifiers under CW optical injection. We demonstrate that, in certain conditions, the light reflected by the system exhibits a multipeaked structure whose dependen...

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Bibliographic Details
Published in:The European physical journal. D, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2005, Vol.32 (1), p.75-82
Main Authors: BARLAND, S, HACHAIR, X, GIUDICI, M, BALLE, S, TREDICCE, J. R, TISSONI, G, SPINELLI, L, LUGIATO, L, BRAMBILLA, M
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Nonlinear optics
Optical materials
Optical solitons
nonlinear guided waves
Optics
Other nonlinear optical materials
photorefractive and semiconductor materials
Physics
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Summary:We analyze experimentally the spatio-temporal dynamics of the transverse structures appearing in broad area edge-emitting semiconductor amplifiers under CW optical injection. We demonstrate that, in certain conditions, the light reflected by the system exhibits a multipeaked structure whose dependence on the parameters suggests an interpretation in terms of cavity solitons. These structures can exhibit self-pulsations with periods of the order of few milliseconds, which we explain in terms of regenerative thermal oscillations. In a particular device, we generate two single-peak structures which are spatially uncorrelated, as required for cavity solitons. A microscopic model shows good agreement with the main body of the experimental results.
ISSN:1434-6060
1434-6079
DOI:10.1140/epjd/e2004-00141-0