Patent ID: 6175582
Filing Date: 2001-01-16
Classification: B82Y,H01S

Abstract:
A semiconductor laser device including a plurality of sequentially formed layers, comprising:a first cladding layer,a first optical guide layer,a first carrier block layer,an active layer,a second carrier blocking layer,a second optical guide layer,a second cladding layer,band gaps of the first and second optical guide layers being wider than that of the active layer,band gaps of the first and second cladding layers being wider than those of the first and second optical guide layers,band gaps of the first and second carrier blocking layers being wider than those of the first and second optical guide layers,one of the first and second cladding layers being of p-type, the other being of n-type,wherein a refractive index of the p-type cladding layer is lower than that of the n-type cladding layer.