Influence of broadening and high-injection effects on GaAs-AlGaAs quantum well lasers

Abstract

Gain spectra and gain-current relations are calculated for GaAs-AlGaAs quantum-well lasers using a model which incorporates a phenomenological description of bandgap narrowing due to many-body effects at high injection, transition broadening by a carrier-density-dependent intraband scattering process, and broadening of the density of states function by fluctuations in the well width. The justification for including all these phenomena is made by examining spontaneous emission spectra observed through contact windows on quantum-well lasers.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>