MACRO-CHANNEL WATER-COOLED HEAT-SINK FOR DIODE-LASER BARS

摘要

A diode-laser bar (60) is mounted on water-cooled heat-sink (20) between two ceramic sub-mounts (62A,62B) for electrically isolating cooling-water in the heat-sink from the diode-laser bar. Mounting between the two ceramic sub-mounts also provides for balancing stresses due to differences in coefficient of thermal expansion (CTE) between the sub-mounts and the diode-laser bar. Both sub-mounts are in thermal communication with the heat-sink for providing two- sided cooling of the diode-laser bar. The assembly of the LD bar (60) hard soldered to the BeO or AIN ceramic sub-mounts (62A,62B) may be inserted into the open space (25) between integral fingers (24) of the heat sink, each finger (24) having a macro-channel (50) for water cooling.