Reduced mono-molecular recombination in GaInNAsSb/GaAs lasers at 1.5 /spl mu/m

We present 1.5 /spl mu/m CW GaInNAsSb/GaAs lasers with typical room temperature threshold densities below 600 A/cm/sup 2/, external efficiencies above 50% and output powers of 200 mW. Z-parameter measurements show these improvements are primarily due to reduced monomolecular recombination.