Mutually injecting semiconductor lasers: simulations for short and zero delay

Nikolay Korneyev; Mindaugas Radziunas; Hans Juergen Wuensche; Fritz Henneberger

doi:10.1117/12.546780

1 September 2004 Mutually injecting semiconductor lasers: simulations for short and zero delay

Nikolay Korneyev, Mindaugas Radziunas, Hans Juergen Wuensche, Fritz Henneberger

Proceedings Volume 5452, Semiconductor Lasers and Laser Dynamics; (2004) https://doi.org/10.1117/12.546780
Event: Photonics Europe, 2004, Strasbourg, France

Abstract

Distant lasers with mutual optical injection are subject to a delayed coupling. We consider the barely investigated case of delays shorter than the relaxation oscillation period. In order to illuminate the role of these short delays, the ultimate zero-delay limit is considered as a reference. We use a traveling wave equation model, which fully resolves the spatio-temporal distributions of optical fields and carriers in the lasers and treats the wave propagation between the lasers by delayed boundary conditions. Wavelength detuning between the otherwise identical single-mode DFB lasers is used as primary bifurcation parameter. The zero-delay reference exhibits a synchronisation scenario typical for coupled oscillators. The nonsynchronised regimes represents a self-pulsation of the nonlinear carrier-photon system. Additional effects appear when including a short delay. Resonances of the cavity formed by the laser pair cause a staircase dependence on detuning of the pulsation frequency. Irregular dynamics is observed at the borders of the locked regions as well as at the edges of the stairs.

Citation Download Citation

Nikolay Korneyev, Mindaugas Radziunas, Hans Juergen Wuensche, and Fritz Henneberger "Mutually injecting semiconductor lasers: simulations for short and zero delay", Proc. SPIE 5452, Semiconductor Lasers and Laser Dynamics, (1 September 2004); https://doi.org/10.1117/12.546780

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