Patent ID: 7088755
Filing Date: 2006-08-08
Classification: B82Y,H01S

Abstract:
1. A nitride-based semiconductor laser device comprising: a substrate consisting of either a nitride-based semiconductor doped with an impurity or a boride-based material; an n-type cladding layer formed on said substrate; an active layer consisting of a nitride-based semiconductor formed on said n-type cladding layer; a p-type cladding layer formed on said active layer; and a light guide layer formed only between said active layer and said p-type cladding layer, wherein said p-type cladding layer includes a p-type cladding layer consisting of a nitride-based semiconductor having a lattice constant smaller than the lattice constant of GaN, and said light guide layer is constituted of a nitride-based semiconductor having a lattice constant larger than the lattice constant of GaN.