Coulomb enhancement in InGaAs-GaAs quantum-well lasers

Abstract

It is shown that Coulomb enhancement (CE) has a significant influence on the spectral characteristics of optical gain and spontaneous emission in strained InGaAs quantum wells. CE-modified gain spectra are utilized to make an accurate prediction of the dependence of lasing wavelength on cavity length. Threshold-current predictions using the CE-modified gain-current relation show improved agreement with experiment.