Patent ID: 8885681
Filing Date: 2014-11-11
Classification: B82Y,H01S

Abstract:
1. A semiconductor laser device comprising: an n-type group III nitride semiconductor layer; an active layer laminated on the n-type group III nitride semiconductor layer; a p-type group III nitride semiconductor layer laminated on the active layer; and a transparent electrode in contact with the p-type group III nitride semiconductor layer, the electrode serving as a clad, wherein the n-type group III nitride semiconductor layer includes an n-type clad layer and an n-type guide layer disposed between the n-type clad layer and the active layer, and the n-type guide layer includes a first guide layer composed of a superlattice layer in which an InGaN layer and an AlxGa1-xN layer (0≦X<1) are laminated periodically and a second guide layer composed of an Inx2Ga1-x2N layer (0≦X2<1) disposed between the first guide layer and the n-type clad layer.