Patent ID: 6765944
Filing Date: 2004-07-20
Classification: H01S

Abstract:
A semiconductor laser device comprising:a first electrode; a substrate having a first conductivity type, disposed on said first electrode; a first cladding layer of the first conductivity type on said substrate; an active layer on said first cladding layer; a second cladding layer having a second conductivity type, opposite the first conductivity type, on said active layer, wherein a first portion of said second cladding layer is thicker than second portions of said second cladding layer, the first portion of said second cladding layer being disposed between two of the second portions of said second cladding; an insulating layer covering the second portions of said second cladding layer, but not the first portion of said second cladding layer, wherein said insulating layer has a thickness on the second portions of said second cladding layer, and a heat conductivity, and the product of the reciprocal of the thickness of said insulating layer and the heat conductivity of said insulating layer is smaller than 4Ã—108 W/(m2K); and a second electrode, electrically connected to the first portion of said second cladding layer, disposed partially on said insulating layer.