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Closed Access item Synchronization scenario of two distant mutually coupled semiconductor lasers

Authors:Mulet, Josep
Mirasso, Claudio R.
Heil, Tilmann
Fischer, Ingo
Keywords:Semiconductor lasers, Injection locking, Synchronization, Nonlinear dynamics
Issue Date:14-Jan-2004
Publisher:Institute of Physics Publishing
Citation:Journal of Optics B: Quantum Semiclass 6, 97-105 (2004)
Abstract:We present numerical and experimental investigations of the synchronization of the coupling-induced instabilities in two distant mutually-coupled semiconductor lasers. In our experiments, two similar Fabry-Perot lasers are coupled via their coherent optical fields. Our theoretical framework is based on a rate equation model obtained under weak coupling conditions. In both experiments and simulations, we find (achronal) synchronization of sub-nanosecond intensity fluctuations in concurrence with an asymmetric physical role among the lasers, even under symmetric operating conditions. We explore the synchronization of these instabilities with respect to the coupling strength and the injection current. We demonstrate the existence of a critical coupling strength, below which synchronization is lost, however dynamical instabilities persist. Our model correctly reproduces the observed dynamical features over the entire investigated parameter space. We provide an intuitive explanation of the appearance of the achronal solution by analyzing the dynamics of the injection phases of the optical fields.
Description:9 pages, 11 figures.-- Published online 21 November 2003.
Publisher version (URL):http://dx.doi.org/10.1088/1464-4266/6/1/016
URI:http://hdl.handle.net/10261/7528
ISSN:1464-4266
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