Self-pulsating semiconductor lasers: theory and experiment

摘要

We report detailed measurements of the pump-current dependency ofnthe self-pulsating frequency of semiconductor CD lasers. A distinct kinknin this dependence is found and explained using a rate-equation model.nThe kink denotes a transition between a region where the self-pulsationsnare weakly sustained relaxation oscillations and a region wherenQ-switching takes place. Simulations show that spontaneous emissionnnoise plays a crucial role in the cross-over