Patent ID: 6539040
Filing Date: 2003-03-25
Classification: B82Y,H01S

Abstract:
A laser diode, comprising:a substrate including an inclined surface region on a principal surface thereof; an active layer formed over said substrate and including an inclined surface region corresponding to said inclined surface region of said substrate; a first cladding layer of p-type formed on said active layer and including an inclined surface region corresponding to said inclined surface region of said active layer; a second cladding layer formed on said first cladding layer and including an inclined surface region of p-type corresponding to said inclined surface region of said first cladding layer, said second cladding layer further including a horizontal region of n-type adjacent to said inclined surface region of p-type, said horizontal region extending parallel to said principal surface of said substrate; a first electrode connected electrically to said substrate; and a second electrode connected electrically to said inclined surface region of said second cladding layer, said inclined surface region of said first cladding layer having a carrier concentration level of 1Ã—1018 cm âˆ’3 or more, said first cladding layer having a thickness of 0.35 &mgr;m or more.