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Optical Engineering

Research on multiannular channel liquid cooling method for thin disk laser
Author(s): Jian Mu; Guoying Feng; Huomu Yang; Hong Zhang; Shouhuan Zhou
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Paper 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.

Paper Details

Date Published: 19 May 2014
PDF: 5 pages
Opt. Eng. 53(5) 056110 doi: 10.1117/1.OE.53.5.056110
Published in: Optical Engineering Volume 53, Issue 5
Show Author Affiliations
Jian Mu, Sichuan Univ. (China)
Guoying Feng, Sichuan Univ. (China)
Huomu Yang, Sichuan Univ. (China)
Hong Zhang, Sichuan Univ. (China)
Shouhuan Zhou, Sichuan Univ. (China)
North China Research Institute of Electro-Optics (China)

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