HIGH-TEMPERATURE OPERATION OF INGAAS STRAINED QUANTUM-WELL LASERS

Strained-layer quantum-well (SQW) laser structures have been investigated for avionics applications requiring high-temperature performance. We have successfully demonstrated, for the first time, InGaAs-GaAs SQW lasers capable of CW operation up to 200-degrees-C with more than 5 mW single-mode optical power. These laser have an emission wavelength of almost-equal-to 980 nm, threshold current density of 200 A/cm2, differential quantum efficiency of 60%, high output power of almost-equal-to 1 W with 50-mu-m stripe, and characteristic temperature (T(o)) of 130-140 K.