19 May 2014 Research on multiannular channel liquid cooling method for thin disk laser
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Abstract
For the nonuniform distribution of pump and temperature in the large-aperture, high-power, thin-disk laser medium, a cooling method of multiannular channel liquid cooling was proposed and examined both experimentally and theoretically. The temperature distribution in the gain medium becomes uniform utilizing the method of multiannular channel liquid cooling, which is proved by a numerical model using Ansys software. In the modeling, the distribution of temperature in the medium varies with the changes of the flow rate and temperature of the coolant in each annular channel. An excellent uniform temperature distribution could be obtained in the gain medium with arbitrary power and profile of pump light by setting a tailored parameter of the coolant in each annular channel. The highest temperature difference in the gain medium with multiannular channel liquid cooling reduces about 88% compared with evenly cooling. Also, the thermal effect has been suppressed; the experimental result is consistent with numerical modeling. This method could be a new idea for designing the thin-disk laser’s cooling system.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Jian Mu, Guoying Feng, Huomu Yang, Hong Zhang, Shouhuan Zhou, "Research on multiannular channel liquid cooling method for thin disk laser," Optical Engineering 53(5), 056110 (19 May 2014). https://doi.org/10.1117/1.OE.53.5.056110 . Submission:
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