Sa. Maranowski et al., ALXGA1-XAS-GAAS-INYGA1-YAS QUANTUM-WELL HETEROSTRUCTURE LASERS WITH NATIVE-OXIDE CURRENT-BLOCKING WINDOWS FORMED ON METALLIZED DEVICES, Applied physics letters, 64(16), 1994, pp. 2151-2153
Data are presented demonstrating improved laser operation of AlxGa1-xA
s-GaAs-InyGa1-yAs quantum well heterostructures modified with buried n
ative oxide current-blocking windows. The windows are formed by low te
mperature (425-degrees-C) anisotropic ''wet'' oxidation of an Al0.9Ga0
.1As layer exposed at the facets of metallized laser bars. These windo
w devices operate continuously to powers as high as 248 mW/facet (unco
ated, approximately 10.5 mum aperture), a apoproximately 25% improveme
nt over nonwindow devices.