Regensburg 2007 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 28: Nonlinear stochastic systems

DY 28.7: Vortrag

Donnerstag, 29. März 2007, 15:30–15:45, H2

Supressing noise-induced intensity pulsations in semiconductor lasers by means of time-delayed feedback — •Valentin Flunkert and Eckehard Schöll — Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin

We investigate the possibility to suppress noise-induced intensity pulsations (relaxation oscillations) in semiconductor lasers by means of the Pyragas control scheme. This idea is first studied in a generic normal form model, where we find an analytic expression for the mean square radius of the oscilltions. We also investigate the control scheme numerically in a model of Lang-Kobayashi type.