Patent ID: 7653105

Claim:
A semiconductor laser using a nitride type Group III-V compound semiconductor, comprising: an n-side clad layer; an n-side optical waveguide layer over said n-side clad layer; an active layer over said n-side optical waveguide layer; a p-side optical waveguide layer over said active layer; an electron barrier layer having a bottom surface over said p-side optical waveguide layer; and a p-side clad layer over said electron barrier layer, wherein, a ridge stripe is formed by an upper part of said p-side optical waveguide layer, said electron barrier layer and said p-side clad layer, the ridge stripe has sidewalls with bottom edges defining a bottom surface of the ridge stripe, and the distance between the bottom surface of said electron barrier layer and the bottom surface of said ridge stripe in areas of said p-side optical waveguide layer on both sides of said ridge stripe is not less than 10 nm.