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Proceedings Paper

Mutually injecting semiconductor lasers: simulations for short and zero delay
Author(s): Nikolay Korneyev; Mindaugas Radziunas; Hans Juergen Wuensche; Fritz Henneberger
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Paper 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.

Paper Details

Date Published: 1 September 2004
PDF: 8 pages
Proc. SPIE 5452, Semiconductor Lasers and Laser Dynamics, (1 September 2004); doi: 10.1117/12.546780
Show Author Affiliations
Nikolay Korneyev, Humboldt-Univ. zu Berlin (Germany)
Mindaugas Radziunas, WeierstraB-Institut fur Angewandte Analysis und Stochastik (Germany)
Hans Juergen Wuensche, Humboldt-Univ. zu Berlin (Germany)
Fritz Henneberger, Humboldt-Univ. zu Berlin (Germany)

Published in SPIE Proceedings Vol. 5452:
Semiconductor Lasers and Laser Dynamics
Daan Lenstra; Geert Morthier; Thomas Erneux; Markus Pessa, Editor(s)

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