Patent ID: 8615026
Filing Date: 2013-12-24
Classification: H01S

Abstract:
1. An edge-emitting semiconductor optical device comprising: a first electrode; a semiconductor substrate; a laminated structure including a first conductive type cladding layer, an active layer, a second conductive type cladding layer, and a contact layer doped with a second conductive type impurity which are sequentially formed on the substrate; a second electrode that is formed on the contact layer such that a current path is formed through the laminated structure between the first electrode and the second electrode; and a window region that is provided at least in the vicinity of an end face of a laser light emitting side and has a bandgap larger than that of a non-window region, wherein a concentration of the second conductive type impurity in the window region of the contact layer is less than that of the second conductive type impurity in the non-window region of the contact layer.