Patent ID: 7030417

Claim:
A semiconductor light emitting device comprising: a first GaN based semiconductor layer that has on top thereof a plurality of concave portions formed into a band-like shape with predetermined intervals therebetween; a second GaN based semiconductor layer formed on the first GaN based semiconductor layer; a layered structure that is formed on the second GaN based semiconductor layer and that comprises an n-type GaN based semiconductor layer, an active layer, and a p-type GaN based semiconductor layer; an n-type electrode that is formed on the n-type GaN based semiconductor layer on the portion where the layered structure is partially removed and become exposed; and a transparent p-type electrode formed on the p-type GaN based semiconductor layer, wherein the p-type electrode serves as an emission detection surface, and an air layer is formed between the bottom surface of the second GaN based semiconductor layer and the concave portion.