Patent ID: 8023543
Filing Date: 2011-09-20
Classification: B82Y,H01S

Abstract:
1. A surface emitting semiconductor laser comprising: a semiconductor substrate; a lower reflector that is formed on the semiconductor substrate and includes a semiconductor multilayer of a first conduction type; an upper reflector that is formed above the semiconductor substrate and includes a semiconductor multilayer of a second conduction type; an active region interposed between the lower reflector and the upper reflector; a current confining layer that is interposed between the lower reflector and the upper reflector and has a conductive region having an anisotropic shape in a plane perpendicular to an optical axis; and an electrode that is formed on the upper reflector and has an opening via which a laser beam is emitted, the opening having different edge shapes in directions of the anisotropic shape, the different edge shapes including a tapered edge shape in a major-axis direction of the anisotropic shape of the current confining layer and an edge shave in a minor-axis direction of the anisotropic shape of the current confining layer that is different than the edge shape in the major-axis direction.