Patent ID: 7526008

Claim:
A surface emitting semiconductor laser device comprising: a substrate; a first semiconductor multilayer reflective film on said substrate; an intermediate layer on said first semiconductor multilayer reflective film and including an active layer; a current passage region above said intermediate layer located in between two current confinement regions, the current passage region and the current confinement regions forming a current confinement layer; a second semiconductor multilayer reflective film above said current confinement layer and provided with a beam outgoing aperture, a part of said first semiconductor multilayer reflective film; a pair of trenches in said second semiconductor multilayer reflective film which are opposed to each other with said beam outgoing aperture as a center there between and side surfaces of which on the beam outgoing aperture side are parallel to either of the diagonal directions of said current passage region; and a solid cylindrical resonance part formed by said intermediate layer and said second semiconductor multilayer reflective film, wherein, said current confinement layer has a current passage region having a rectangular shape with an in-plane anisotropy.