Nonequilibrium theory for semiconductor laser systems

A dynamical laser model is coupled to a fully microscopic calculation of scattering rates, allowing efficient calculations without phenomenological parameters. The approach is used to analyze nonequilibrium effects in the switch-on of an optically pumped laser structure. Lasing leads to kinetic hole burning in both electron and hole distribution. The gain spectrum, however, does not show spectrally narrow hole burning but a reduction over a wide range of frequencies compared to the equilibrium gain because of the large homogeneous broadening in the high density lasing system.