Dv. Donetsky et al., Direct measurements of heterobarrier leakage current and modal gain in 2.3mu m double QW p-substrate InGaAsSb/AlGaAsSb broad area lasers, ELECTR LETT, 35(4), 1999, pp. 298-299
The heterobarrier hole leakage current and modal gain for GaSb-based lasers
have been measured for the first time. It is shown that this leakage curre
nt is not a factor limiting high temperature operation of the device. Signi
ficant broadening of the optical gain with increasing temperature is demons
trated.