Patent ID: 8369372
Filing Date: 2013-02-05
Classification: H01S

Abstract:
1. A laser device comprising: a substrate; a lower cladding layer supported by said substrate; an active layer supported by said lower cladding layer; an upper cladding layer supported by said active layer; first and second diffraction gratings located in a layer on the same side of said active layer, relative to said substrate, as said upper cladding layer and each having dimensions of at least 100 μm by 100 μm, said first and second diffraction gratings having different periods and diffracting and directing light generated in said active layer in the direction generally perpendicular to the longitudinal direction of said upper cladding layer, wherein said lower cladding layer, said active layer, and said upper cladding layer have opposed first and second end faces defining a resonator; a first reflective film located on said first end face of said resonator and reflecting light generated in said active layer; and a second reflective film located on said second end face of said resonator and reflecting light generated in said active layer.