Patent ID: 6560261
Filing Date: 2003-05-06
Classification: B82Y,H01S

Abstract:
A semiconductor laser device comprising:a compressive-strain active layer made of Inx3Ga1âˆ’x3As1âˆ’y3Py3, where 0an upper tensile-strain barrier layer, formed on said compressive-strain active layer, made of Inx2Ga1âˆ’x2As1âˆ’y2P1âˆ’y2, where 0&lE;x2<0.49y2 and 0an upper optical waveguide layer, formed on said upper tensile-strain barrier layer, made of In0.49Ga0.51P that lattice-matches with GaAs; a lower tensile-strain barrier layer, formed under said compressive-strain active layer, made of Inx2Ga1âˆ’x2As1âˆ’y2P1âˆ’y2, where 0&lE;x2<0.49y2 and 0a lower optical waveguide layer, formed under said lower tensile-strain barrier layer, made of In0.49Ga0.51P that lattice-matches with GaAs.