Patent ID: 7995632
Filing Date: 2011-08-09
Classification: B82Y,H01S

Abstract:
1. A nitride semiconductor laser chip comprising: a nitride semiconductor substrate; a plurality of nitride semiconductor layers laminated on a surface of the nitride semiconductor substrate and including an active layer; a stripe-shaped waveguide formed on the nitride semiconductor layers; and a resonator facet formed as a result of the nitride semiconductor layers, together with the nitride semiconductor substrate, being cleaved, wherein a principal plane of the nitride semiconductor substrate is a (1-100) plane, the resonator facet is perpendicular to the principal plane, in a cleavage surface forming the resonator facet, at least by one side of the stripe-shaped waveguide, an etched-in portion is formed as an etched-in region open toward a surface of the nitride semiconductor layers, and the etched-in portion is formed, in a resonator direction of the nitride semiconductor laser chip, only in part of the chip including the cleavage surface so as not to extend completely from end to end.