Patent ID: 9065238
Filing Date: 2015-06-23
Classification: H01L,H01S

Abstract:
1. Diode-laser apparatus, comprising: an electrically insulating, ceramic sub-mount having a high thermal conductivity and first and second opposite sides; a diode-laser bar solder-bonded to the first side of the ceramic sub-mount; a heat-sink assembly including a base-unit and a copper cooling-unit, each thereof having first and second opposite sides, the cooling-unit and the base-unit being attached together with the first side of the base-unit mating with the second side of the cooling-unit; the copper cooling-unit including an integral platform on the first side thereof, the platform having a mounting surface; a plurality of cooling-channels formed in the cooling-unit under the mounting surface of the platform each thereof having opposite first and second ends, the cooling-channels being formed from a rectangular recess in the second side of the cooling-unit, the recess having a plurality of elongated grooves in the base thereof spaced apart and parallel to each other with adjacent ones thereof separated by ridges, and from an integral rectangular extension-block on the first side of the base-unit, the extension-block extending into the recess, engaging the ridges, and partially covering the grooves such that the grooves become the cooling-channels, the extension-block being configured relative to the recess to leave each of the grooves uncovered at first and second opposite ends thereof for providing the first and second ends of the cooling-channels; and the base-unit including an input-passage for directing water into the first ends of the cooling-channels and an output-passage for conducting water away from the second ends of the cooling-channel.