Low threshold 1.59 /spl mu/m vertical-cavity surface-emitting lasers with strain-compensated multiple quantum wells

We demonstrated, for the first time, long wavelength InGaAs/InGaAsP VCSELs with strain-compensated multiple quantum wells. Record low threshold pumping power and high T/sub o/ have been achieved. The exceedingly high optical gain and the capability of growing many wells relax the stringent requirement on mirror reflectivity making strain-compensated multiple quantum wells attractive for long wavelength VC-SELs.