Patent ID: 8660160
Filing Date: 2014-02-25
Classification: B82Y,H01S

Abstract:
1. A semiconductor laser element comprising: a substrate of a first conduction type; and a layered semiconductor structure formed on the substrate, wherein the layered semiconductor structure includes the second semiconductor layer includes a current confinement layer that narrows a current path through which a current is injected into the active layer and that protrudes no less than 1.5 micrometers toward the non-window region from an interface between the window region and the non-window region, wherein a center position of a current confinement region surrounded by the current confinement layer matches a center position of the window region, and wherein a width of the non-window region is between 3 micrometers and 50 micrometers greater than a width of the current confinement region in a direction perpendicular to both a layer direction of the layered semiconductor structure and a direction in which the light is emitted.