Patent ID: 7907652

Claim:
A semiconductor laser device comprising: a semiconductor laser element having a warp in 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 in said first direction and provided with a wire bonding portion; and a base to which a convex side of said warp in said first direction is fixed, wherein said warp in said first direction is larger than a warp of said semiconductor laser element in a second direction intersecting with said first direction, said semiconductor laser element is so fixed to said base that a distance between said convex side and said base varies with said warp in said first direction, and said wire bonding portion is provided around a portion of a vicinity of a either a light emitting end or a light reflecting end of said cavity positioned on an end of said semiconductor laser element in said first direction where said distance is substantially the smallest.