Patent ID: 8743924

Claim:
A surface-emission laser diode, comprising: a GaAs substrate; a cavity region formed over said GaAs substrate, said cavity region including at least one quantum well active layer producing a laser light and barrier layers; and an upper reflector and a lower reflector provided at a top part and a bottom part of said cavity region over said GaAs substrate, said upper reflector and/or said lower reflector including a semiconductor Bragg reflector, at least a part of said semiconductor distributed Bragg reflector comprising a semiconductor layer containing Al, Ga and As as major components, wherein there is provided, between said active layer and said semiconductor layer that contains Al, Ga and As as major components, a semiconductor layer containing Al, In and P as major components such that said semiconductor layer containing Al, In and P as major components is provided adjacent to said semiconductor layer that contains Al, Ga and As as major components, an interface between said semiconductor layer containing Al, Ga and As as major components and said semiconductor layer containing Al, In and P as major components being formed coincident to a location of a node of electric field strength distribution.