Full-band modeling of AM and FM interband cascade laser frequency combs

Abstract

A numerical model for the simulation of frequency combs in interband cascade lasers is developed. The approach is based on slowly varying amplitude approximation for electromagnetic field and semiconductor Bloch equations for the electron gas. The electron gas nonequilibrium distribution function is computed explicitly. Effects of both radiative and nonradiative recombination are considered. The model is applied to both amplitude modulated and frequency modulated combs.