200-DEGREES-C, 96-NM WAVELENGTH RANGE, CONTINUOUS-WAVE LASING FROM UNBONDED GAAS MOVPE-GROWN VERTICAL-CAVITY SURFACE-EMITTING LASERS

We report record temperature and wavelength range attained using MOVPE-grown AlGaAs vertical cavity surface-emitting lasers (VCSEL's). Unbonded continuous-wave lasing is achieved at temperatures up to 200 degrees C from these top-emitting VCSEL's and operation over a 96-nm wavelength regime near 850 nm is also achieved from the same nominal design. Temperature and wavelength insensitive operation is also demonstrated; threshold current is controlled to within a factor of 2 (2.5-5 mA) for a wavelength range exceeding 50 nm and to within +/-30% (5-10 mA) for a temperature range of 190 degrees C at 870 nm.