Patent ID: 8422522

Claim:
A semiconductor laser device comprising: a semiconductor laser element; a first lead having a mounting portion for mounting the semiconductor laser element on a top surface of the mounting portion via a submount member, and a lead portion extending from the mounting portion; a second lead extending along the lead portion of the first lead; and a holding portion made of an insulative material for integrally holding the first lead and the second lead, wherein given that a direction in which a primary beam is emitted from the semiconductor laser element is defined as a forward direction, a direction vertical to the forward direction and parallel to the top surface of the mounting portion is defined as a lateral direction, and that a direction vertical to the top surface of the mounting portion is defined as an up/down direction, the first lead has, in one region of a side face of the mounting portion, a lateral reference surface which is parallel to a side face of the semiconductor laser element and which is flat, and in the one region of the side face of the mounting portion, a recess portion is provided adjacent to the lateral reference surface, and wherein a cut-and-raised portion is formed by cutting and upwardly raising a region of the mounting portion other than a region where the semiconductor laser element is mounted, and spaces formed in the mounting portion by the formation of the cut-and-raised portion are filled with the material of the holding portion; the mounting portion has a part of a protrusive shape at its rear side, an upper surface of the semiconductor laser element and the part having the protrusive shape are connected to each other with a wire.