Patent ID: 8030110
Filing Date: 2011-10-04
Classification: B82Y,H01L,H01S

Abstract:
1. A method for fabricating a nitride semiconductor laser device, comprising: a first step of forming a substrate whose top surface is a nitride semiconductor layer and that has a carved region and a non-carved region; a second step of forming, directly onto the top surface of the substrate, a nitride semiconductor film having a stripe-shaped laser light waveguide structure, wherein the top surface of the substrate has a low defect region with a defect density of 10 in the first step, the carved region is formed in the top surface of the substrate in the low defect region of the substrate, and the non-carved region is formed in the top surface of the substrate, in the second step, the nitride semiconductor film is formed above both the carved region and the non-carved region, in the second step, the laser light waveguide structure in the nitride semiconductor film is formed right above the non-carved region, and in the second step, the laser light waveguide structure in the nitride semiconductor film is formed in a region located 5 μm or more away from the nearest edge of the carved region in the top surface of the substrate.