Patent ID: 7881359

Claim:
A surface-emitting semiconductor laser device comprising: an n-type or semi-insulating substrate; a layer structure including a bottom multilayer reflector, an n-type cladding layer, an active layer structure for emitting laser, a p-type cladding layer and a p-type top multilayer reflector including a semi-insulating semiconductor or dielectric material, which are consecutively formed on said n-type or semi-insulating substrate, said active layer structure, said p-type cladding layer and said top multilayer reflector configuring a mesa post formed on a portion of said n-type cladding layer, said p-type cladding layer or said p-type top multilayer reflector including therein a current confinement oxide layer, said top multilayer reflector being formed on a portion of said p-type cladding layer; a p-side electrode formed on another portion of said p-type cladding layer; and an n-side electrode formed on another portion of said n-type cladding layer, said n-side electrode including a substantially uniform Au film and an AuGeNi film or AuGe film consecutively formed on said n-type cladding layer, an alloyed layer being formed between said Au film and said AuGeNi film or AuGe film, and said Au film being formed upon said n-type cladding layer.