Patent ID: 6167071
Filing Date: 2000-12-26
Classification: H01S

Abstract:
An end face emitting type semiconductor laser comprising:a substrate;a first semiconductor layer, which includes a first clad layer, formed on the substrate;an active layer formed on the first semiconductor layer;a second semiconductor layer, which includes a second clad layer and a cap layer, formed on the active layer, wherein the cap layer is formed above the second clad layer;a first electrode formed on the substrate or the first semiconductor layer; anda second electrode formed on the upper surface of the second semiconductor layer such that the cap layer is adjacent to the second electrode,wherein the second semiconductor layer is transparent to light of a wavelength at which the semiconductor laser oscillates, andfurther wherein a pattern of concavity and convexity is formed on the upper surface of the cap layer in a region corresponding to an oscillating part of the semiconductor laser.