Abstract A semiconductor laser element includes a first cladding layer of first conductivity type provided on a semiconductor substrate of the first conductivity type; a current blocking layer of a second conductivity type provided on the first cladding layer having a stripe groove from which the first cladding layer and is exposed at the bottom thereof; a light guide layer of the first conductivity type provided covering the current blocking layer, the stripe groove, and the first cladding layer exposed from the groove; an active layer provided on the light guide layer curved in the neighborhood of the stripe groove, whose refractive index is larger than that of the light guide layer; and a second cladding layer of the second conductivity type provided on the active layer, whose refractive index is smaller than that of the active layer.
A method for producing a semiconductor element for a semiconductor laser device; comprising the steps of: producing on a substrate of a first conductivity type a first cladding of said conductivity type and a current blocking layer of a second conductivity type respectively by a Metal Organic Chemical Vapor Deposition method, MO-CVD method; etching a groove stripe in said current blocking layer so as to expose a portion of said first cladding layer; and successively producing a light guide layer of said first conductivity type, an active layer and a second cladding layer of said second conductivity type on said current blocking layer and said stripe groove by said MO-CVD method.
Claim 2
Independent Claim
111 words
A method for producing a semiconductor element for a semiconductor laser device; comprising the steps of: producing on a substrate of a first conductivity type a first cladding of said conductivity type and a current blocking layer of a second conductivity type respectively by a Metal Organic Chemical Vapor Deposition method, MO-CVD method; etching a groove stripe in said current blocking layer so as to expose a portion of said first cladding layer; and successively producing a light guide layer of said first conductivity type, an active layer and a second cladding layer of said second conductivity type on said current blocking layer and said stripe groove by said MO-CVD method.