Patent ID: 7656921

Claim:
A semiconductor laser element comprising; a substrate of a first conductivity type and having a planar major surface; a ridge part including a first semiconductor layer of a first conductivity type, an active layer that generates a laser beam, and a second semiconductor layer of a second conductivity type, sequentially laminated in this order and disposed on the major surface of said substrate, said ridge part having side surfaces in (111) crystalline planes of said first and second semiconductor layers and said active layer, said side surfaces forming a predetermined angle with the major surface of said substrate; a current blocking structure including a third semiconductor layer of the first conductivity type, a fourth semiconductor layer of the second conductivity type, and a fifth semiconductor layer of the first conductivity type, sequentially laminated, in this order, and burying both side surfaces of said ridge part, said fourth semiconductor layer being enveloped by said third semiconductor layer and said fifth semiconductor layer so that said fourth semiconductor layer does not contact either side surface of said ridge part; and a sixth semiconductor layer of the second conductivity type covering an upper surface of said ridge part and an upper surface of said current blocking structure.