Abstract

A model of a semiconductor laser with weak-to-moderate optical feedback generalizing Lang–Kobayashi equations to the case of incoherent feedback is presented. It is shown that the transition from coherent to incoherent feedback through increasing spontaneous noise leads to replacement of dynamic chaos by almost stationary lasing with slightly fluctuating intensity. In the case of incoherent feedback, the proposed model has fluctuating solutions only, so it is impossible to build a purely dynamic model of the semiconductor laser with incoherent feedback.

© 2014 Optical Society of America

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