Continuous-Wave (CW) operation of GaInP-AlGaInP visible compressively strained multiple quantum-wire (CS-WQWR) lasers

GaInP-AlGaInP compressively strained multiple quantum-wire layers were fabricated by the in situ strain induced lateral layer ordering process, during gas source molecular beam epitaxial (GS-MBE) growth. The effect of compositional modulation was described in terms of PL spectra, and TEM images for GaInP-AlGaInP MQWR lasers with 18 period (GaP)/sub 1.5/-(InP)/sub 1.5/ SPBS active layers. Based on transmission electron microscopy (TEM) images, the size of quantum-wire width was estimated, and the size fluctuation of quantum wires were discussed. Quantum-wire effect was discussed in terms of anisotropic lasing characteristics and EL polarization, which were reflected by an anisotropic oscillation strength in quantum wires and the comparison with GaInP-AlGaInP compressively strained quantum-film lasers was examined in terms of threshold current density. The condition under which quantum wires were formed by strained induced lateral layer ordering process was discussed in terms of anisotropic behaviors of lasing characteristics, such as threshold current density and lasing wavelength for GaInP-AlGaInP MQWR lasers with (GaP)/sub m//(InP)/sub m/SPBS active layers. The lowest obtained J/sub th/ value was 278 A/cm/sup 2/ under the room temperature (r.t.) pulsed condition. The first CW operation of GaInP-AlGaInp quantum-wire laser was described. Threshold current was 294 A/cm/sup 2/ and CW operation up to 70/spl deg/C was obtained.>