Laser light source module

A laser light source module comprising:

• a base plate having lead pins;
• and
• first and second laser assemblies disposed on the base plate,
• wherein each of the laser assemblies comprises:
• a laser device emitting a laser light along an optical axis;
• an electrically-insulating sub-mount;
• and
• a holding member having amounting surface parallel to the optical axis, the laser device being mounted on the mounting surface, such that the sub-mount is interposed between the laser device and the mounting surface,
• wherein a metallized pattern is formed on the sub-mount,
• wherein the laser device is joined to the metallized pattern by soldering,
• wherein the laser device has a driving electrode electrically connected through a wire to the holding member,
• wherein the metallized pattern is electrically connected through a conductor to the lead pins,
• wherein the first and second laser assemblies are positioned such that the optical axes of the first and second laser assemblies are parallel to each other and that the mounting surfaces of the first and second laser assemblies are arranged opposite to each other in parallel,
• wherein the laser devices mounted on the first and second laser assemblies have anodes and cathodes respectively electrically connected to the lead pins and are thereby electrically insulated between the laser devices,
• wherein the lead pins connected to the laser device mounted on the first laser assembly and the lead pins connected to the laser device mounted on the second laser assembly are respectively connected to two power sources to enable the laser devices to independently oscillate,
• wherein the current values respectively supplied with the laser devices mounted on the first and second laser assemblies are controlled independently from each other, so that even if one of the laser devices mounted on the first and second laser assemblies is damaged, the laser light source module can continue to drive the other one.