Patent ID: 8548019

Claim:
A GaN-based laser device having a GaN-based semiconductor stacked-layered structure including a light emitting layer formed on a substrate, wherein said semiconductor stacked-layered structure includes a stripe-shaped waveguide structure of a ridge stripe type formed therein and has two side surfaces opposite to each other so that said stripe-shaped waveguide is disposed between the two side surfaces in a width direction of the stripe-shaped waveguide structure of a ridge stripe type, said two side surfaces are formed by partially removing said semiconductor stacked-layered structure from an upper surface thereof to a level deeper than said light emitting layer such that the two side surfaces of the semiconductor stacked-layered structure are tilted with respect to a plane orthogonal to said light emitting layer and separated from the stripe-shaped waveguide structure, each of the two side surfaces extends along the entire length of the stripe-shaped waveguide structure, and said two side surfaces are disposed off chip-division lines along which said device has been cut off.