Patent ID: 7462882

Claim:
A nitride semiconductor light-emitting device formed from a nitride semiconductor wafer comprising a plurality of nitride semiconductor layers disposed on top of a nitride semiconductor substrate, wherein the nitride semiconductor substrate is a GaN substrate having, in a surface thereof on which the plurality of nitride semiconductor layers are disposed, a plurality of stride-shaped dislocation-concentrated regions terminated with nitrogen, and a region, other than dislocation-concentrated regions, terminated with gallium, wherein the surface of the nitride semiconductor substrate on which the plurality of nitride semiconductor layers are disposed has a C plane that has an off-angle of 0.2° or more but 2.0° or less in a perpendicular direction with respect to a direction in which the dislocation-concentrated regions extend, and of which an off-angle in a parallel direction with respect to the direction in which the dislocation-concentrated regions extend is equal to or less than the off-angle in the perpendicular direction, wherein the nitride semiconductor light-emitting device has, between the plurality of dislocation concentrated regions, a laser light guide region formed in the parallel direction, and wherein the nitride semiconductor light-emitting device is cut out of the nitride semiconductor wafer and has, as end surfaces of a cavity, cleavage planes perpendicular to the laser light guide region.