Patent ID: 7245643

Claim:
A semiconductor laser module comprising: a first stripe and a second stripe formed on a semiconductor substrate, said first stripe and said second stripe configured to emit respectively a first laser beam and a second laser beam; at least one first lens positioned so that the first laser beam and the second laser beam are incident thereon; a substrate having a mounting surface on which the semiconductor substrate is mounted; an optical synthesizing module including an optical synthesizing element having a first input part on which the first laser beam is incident, a second input part on which the second laser beam is incident, and an output part from which the first laser beam emerging from the first input part and the second laser beam emerging from the second input part are emitted, and a holder member configured to hold the optical synthesizing element and having at least partially substantially columnar peripheral outer surface around a center axis thereof; a supporting member configured to support said optical synthesizing module at the columnar peripheral surface of the holder member, said supporting member including a bottom plate joined to said substrate and two mutually parallel upright walls provided perpendicularly on both lateral ends of the bottom plate, the two upright walls being parallel to the center axis of the optical synthesizing module; and an optical fiber configured to receive a laser beam emerging from the output part of the optical synthesizing element, wherein said optical synthesizing module is fixed to said supporting member in a state that the columnar peripheral surface of the holder member is placed between the two upright walls of said supporting member, and such that the first laser beam emerging from the first input part and the second laser beam emerging from the second input part are combined and emitted as a combined laser beam from the output part generally along the center axis of the holder member.