Patent ID: 7869480

Claim:
A semiconductor laser device comprising: a semiconductor laser element having a warp along a first direction corresponding to an extensional direction of a cavity; an electrode layer formed on a surface of a concave side of said warp of said semiconductor laser element; and a base to which a convex side of said warp of said semiconductor laser element is fixed, wherein said electrode layer has a first portion provided along said first direction and a wire bonding portion protruding from either around a light emitting end or around a light reflecting end of said cavity of said first portion in a second direction intersecting with said first direction in plan view, said semiconductor laser element is so fixed to said base that a distance between said convex side of said warp of said semiconductor laser element and said base varies with said warp of said semiconductor laser element along said first direction and that said distance either around said light emitting end or around said light reflecting end of said cavity of said first portion is the largest, and said semiconductor laser element has a warp along said second direction.