Patent ID: 6865203

Claim:
A semiconductor laser light emitting device comprising: a stack of group III nitride semiconductor films; wherein each group III nitride semiconductor film comprises an element selected from the group consisting of aluminum, gallium, indium, and boron; wherein, an upper portion of said stack of group III nitride semiconductor films is formed into a ridge-like stripe, to form a current injection region; wherein a current injection width Wst of said current injection region is at a value in a range of 1 μm≦Wst≦3 μm; and wherein said current injection region is formed on an active layer; a current non-injection region formed on both sides of said ridge-like stripe current injection region, wherein said cm-rent non-injection region comprises a material expressed by a chemical formula Al x Ga 1-x N, wherein the component ratio “x” of Al is at a value in a range of 0.3≦x≦1.0; and a film located between the active layer and the current non-injection region, comprising a material expressed by a chemical formula Al x Ga 1-x N (0.3≦x≦1.0), and having a combined thickness of less than or equal to 0.2 μm but greater than zero.