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8 May 2008 Bifurcations of composite-cavity modes in multi-stripe laser arrays
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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.
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Hartmut Erzgräber, Sebastian Wieczorek, and Bernd Krauskopf "Bifurcations of composite-cavity modes in multi-stripe laser arrays", Proc. SPIE 6997, Semiconductor Lasers and Laser Dynamics III, 69971L (8 May 2008);

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