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permission from Tri-Star Technologies.
4.2 Laser Cooling System
Thermal management of the laser head is key to achieving
proper system performance, including cold-start performance. At normal
ambient operating temperature (25°C), the laser head generates
about 90 W of heat (but up to 160 W) that must be dissipated by the
heatsink to which the laser head is mounted. Heatsink (P/N EXPL-XP-HTSNKA)
includes a fan for use with the laser head. The auxiliary fan
attached to the heatsink is controlled through the laser. A temperature sensor
inside the housing continuously measures the base plate temperature,
and its feedback is part of an active servo-loop that is used to set the fan
speed.
The laser system provides the drive current for all of the active components
inside of the laser head, including the thermoelectric coolers (TEC), the
diode laser, the Q-switch driver, the microprocessors and non-volatile
memory. It also provides the communication and control interface for the
user.
The laser requires a 24 ±2 Vdc, 7 A electrical source. The laser system has
been certified to comply with the requirements of the RoHS Directive (the
Restriction of Hazardous Substances) of the European Union.