Method and apparatus for cooling a slab laser
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United States of America Patent
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-
Jan 7, 1986
Grant Date -
N/A
app pub date -
Aug 22, 1983
filing date -
Aug 22, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a high average power slab laser, heat generated in the laser slab is conducted through a thin layer of thermally conductive gas, such as hydrogen, helium or air, and then through an optically transparent window into a flow of liquid coolant. In a preferred embodiment, a second flow of liquid coolant is employed for cooling of the pumping lamps such lamp liquid coolant flow being partitioned from the slab liquid coolant flow by means of an optically transparent partition through which the pump radiation is directed from the lamps to the slab. In another embodiment, the slab coolant flow is controlled so as to operate the laser slab in a self-annealing temperature regime, whereby thermal stresses are annealed out in use and higher average output beam power is obtained.
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