COOLER, SEMICONDUCTOR LASER LIGHT SOURCE, SEMICONDUCTOR LASER LIGHT SOURCE UNIT, METHOD FOR PRODUCING SEMICONDUCTOR LASER LIGHT SOURCE UNIT, AND SOLID LASER

摘要

A semiconductor laser light source and a light source unit each comprise a first platelike metallic member to which a semiconductor laser array is joined along the periphery, a second platelike metallic member having an inlet opening for introducing coolant and a coolant draining groove both formed therein, and a third platelike metallic member having therein at least one cooling groove formed along the area corresponding to the periphery, communicating with a coolant introducing groove and the coolant draining groove, and adapted for allowing the coolant to flow in the longitudinal direction of the semiconductor laser array. As a result, the cross sections of the grooves are larger than those of a conventional structure, the production cost is lower than that of a conventional structure, and problems such as clogging of the passage and high pressure loss are solved. Since the groove is formed in the longitudinal direction of the semiconductor laser array is formed, the semiconductor laser array can be efficiently cooled.