Patent ID: 8358674
Filing Date: 2013-01-22
Classification: B82Y,H01S

Abstract:
1. A semiconductor laser element comprising; a substrate, a semiconductor layer laminated a first conductivity type semiconductor layer, an active layer and a second conductivity type semiconductor layer in that order on the substrate, a stripe-like ridge formed on an upper face of the second conductivity type semiconductor layer, a conductive oxide layer formed on the upper face of the ridge, a dielectric layer, with a refractive index that is lower than a refractive index of the semiconductor layer, formed on the side faces of the ridge, and a metal layer formed so as to cover the conductive oxide layer and the dielectric layer, a surface of the conductive oxide layer is exposed from the dielectric layer, and the side faces of the conductive oxide layer are sloped with respect to the upper face of the ridge, and an inclination angle of the side faces of the conductive oxide layer with respect to a normal direction is greater than an inclination angle of the side faces of the ridge with respect to a normal direction.