Patent ID: 6891201

Claim:
A nitride semiconductor laser device, comprising: a processed substrate ( 101 a ) including a groove and a hill formed on a main surface of a nitride semiconductor substrate; a nitride semiconductor underlayer ( 102 ) covering the groove and the hill of said processed substrate; and a light emitting device structure having a light emitting layer ( 106 ) including a quantum well layer or a quantum well layer and a barrier layer in contact with the quantum well layer between an n type layer ( 103 - 105 ) and a p type layer ( 107 - 110 ) over said nitride semiconductor underlayer, a current-constricting portion (RS) of said light emitting device structure being formed above a region more than 1 μm away from the center of said groove in the width direction and more than 1 μm away from the center of said hill in the width direction.