Patent ID: 8031751
Filing Date: 2011-10-04
Classification: B82Y,H01L,H01S

Abstract:
1. A nitride semiconductor laser device comprising: at least two nitride semiconductor laser elements; and a sub-mount structure, wherein said sub-mount structure includes one first sub-mount and one second sub-mount, the second sub-mount having a level lower face, wherein said nitride semiconductor laser elements have at least a first electrode on a first main surface of a first conductive type conductive substrate, at least a first conductive type nitride semiconductor layer, an active layer, a second conductive type nitride semiconductor layer, and a second electrode on a second main surface of said conductive substrate, and a stripe waveguide structure parallel to said first main surface, two or more nitride semiconductor laser elements are arranged in a direction parallel to the first main surface and a direction perpendicular to the direction of light that is emitted from said stripe waveguide structure, said first sub-mount and an entire first surface of said first electrode of all said nitride semiconductor laser elements are electrically and heat-conductively connected, said second sub-mount and an entire second surface of said second electrode of all said nitride semiconductor laser elements are electrically and heat-conductively connected, all said nitride semiconductor laser elements are separated from each other, all said nitride semiconductor laser elements are sandwiched between said one first sub-mount and said one second sub-mount, and said first sub-mount and said second sub-mount are configured to respectively contact the entire first and second surfaces of all said nitride semiconductor laser elements.