Room-temperature cw operation of GaInAsSb/AlGaAsSb quantum well diode lasers emitting beyond 2 /spl mu/m

Summary form only given. We have demonstrated room-temperature CW operation of large optical cavity GaInAsSb-AlGaAsSb type-I QW lasers emitting at 2.25 /spl mu/m, lasing up to at least 320 K. A maximum current efficiency of 0.16 W/A and power efficiency of 17% has been achieved.