Observation of reduced nonradiative current in 1.3-μm AlGaInAs-InP strained MQW lasers

We investigated experimentally the temperature dependence of the threshold current in 1.3-μm AlGaInAs-InP strained multiple-quantum-well lasers. We find that radiative recombination constitutes almost 100% of the threshold current up to 220 K and remains more than 70% even at 300 K. This results in a high characteristic temperature T
₀
.