Design Of Multi Quantum Well Lasers For Surface Emitting Arrays

Abstract

A quantum well (QW) gain model was developed and was applied to optimization of surface emitting diode laser arrays. To increase output power density per unit surface area, short cavity lengths must be considered. We show how the maximum power density and power efficiency requirements lead to multiple wells; the performance is limited by gain saturation associated with QW subband filling at increased threshold gain requirements in short cavity lasers.