Patent ID: 7940825

Claim:
A surface-emission laser diode, comprising: an active layer; a pair of cavity spacer layers formed at both sides of said active layer; a current confinement structure defining a current injection region into said active layer; and a pair of distributed Bragg reflectors opposing with each other across a structure formed of said active layer and said pair of cavity spacer layers, said current confinement structure comprising a high resistance region formed by an ion implantation process, said pair of distributed Bragg reflectors being formed of semiconductor materials, wherein there is provided a region containing an oxide of Al and having a relatively low refractive index than a surrounding region in any of said semiconductor distributed Bragg reflector or said cavity spacer layer in correspondence to a part spatially overlapping with said current injection region in a laser cavity direction, and wherein there is provided any of a GaAs layer or a GaInP mixed crystal layer adjacent with an AlGaAs mixed crystal layer constituting said region of relatively low refractive index with respect to said surrounding region not injected with said molecules containing oxygen and located on an identical plane of said part where said ion implantation of said molecules has been made.