Patent ID: 7554127
Filing Date: 2009-06-30
Classification: B82Y,H01S

Abstract:
1. A semiconductor light-emitting element, comprising: an n-type cladding layer; a light guide layer positioned on the n-type cladding layer; a multiple quantum well structure active layer positioned on the light guide layer; a p-type carrier overflow prevention layer positioned on the active layer and having an impurity concentration of 5×10 a single p-type light guide layer positioned directly on the p-type carrier overflow prevention layer, an entire region of the single p-type light guide layer having an impurity concentration of 1×10 a p-type cladding layer positioned directly on the single p-type light guide layer and having a band gap narrower than the p-type carrier overflow prevention layer, wherein of the n-type cladding layer, the light guide layer, the multiple quantum well structure active layer, the p-type carrier overflow prevention layer, the single p-type light guide layer, and the p-type cladding layer, only the p-type cladding layer has a ridge potion, and wherein the n-type cladding layer and the p-type cladding layer each have a composition Al