Rate equation model for nonequilibrium operating conditions in aself-organized quantum-dot laser

摘要

A nonequilibrium rate equation model is presented and analyzed fornthe self-organized quantum dot (QD) laser. The model assumes the QD zerondimensional levels are coupled to a thermal electron distribution in thenwetting layer through reservoir rate equations. By including the energyndependence of the wetting layer reservoir versus temperature, the modelnaccounts for the spectral narrowing of the gain with increasingntemperature, the negative temperature coefficient of the lasingnthreshold, and a reduction of the spectral hole burning with increasingntemperature, all found experimentally in QD lasers