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Modelling of Semiconductor Mode-Locked Lasers

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Abstract

In this paper we review the different operation regimes encountered in passively mode-locked semiconductor lasers, and the modelling strategies developed on the basis of Travelling-Wave Models. The use of a time-domain convolution kernel for the optical response of the QW media allows to reduce the commputational requirements on the system and speeding up the computations by orders of magnitude. We show that the relative detuning between the band edge of the gain and saturable absorber sections has a major impact on the quality of the pulse train, and that dynamical variations of this detuning due to Joule heating lead to a severe deterioration of the mode-locked regime. The impact of the cavity configuration on the quality of the mode-locked pulse train is also discussed.

© 2012 Optical Society of America

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