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Proceedings Paper

Bifurcations of composite-cavity modes in multi-stripe laser arrays
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Paper Abstract

We consider a semiconductor laser device, where the active region consists of parallel stripes in the longitudinal direction. In the composite cavity model, the stripes are coupled via the transversal modes of the entire compound laser device. By calculating the spatial mode profiles we accurately account for the frequency detuning between the modes as well as for the gain and coupling of the individual modes, which are determined by spatial overlap integrals of the mode profiles. In particular, we show the nonlinear dependence of these quantities on the geometry of the laser device. The temporal dynamics of the composite cavity modes are described by corresponding rate equations. Bifurcation analysis of these rate equations, which are coupled to the spatial mode equations, unravels the dynamics of a twin-stripe laser. We identify different locking regions as well as regions with possibly chaotic dynamics.

Paper Details

Date Published: 8 May 2008
PDF: 10 pages
Proc. SPIE 6997, Semiconductor Lasers and Laser Dynamics III, 69971L (8 May 2008); doi: 10.1117/12.780621
Show Author Affiliations
Hartmut Erzgräber, Univ. of Exeter (United Kingdom)
Sebastian Wieczorek, Univ. of Exeter (United Kingdom)
Bernd Krauskopf, Univ. of Bristol (United Kingdom)

Published in SPIE Proceedings Vol. 6997:
Semiconductor Lasers and Laser Dynamics III
Krassimir P. Panajotov; Marc Sciamanna; Angel A. Valle; Rainer Michalzik, Editor(s)

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