Multi-annular channel liquid cooled Nd:YAG thin disk laser medium

Jian Mu; Guoying Feng; Huomu Yang; Hong Zhang; Shouhuan Zhou

doi:10.1117/12.2048241

28 February 2014 Multi-annular channel liquid cooled Nd:YAG thin disk laser medium

Jian Mu, Guoying Feng, Huomu Yang, Hong Zhang, Shouhuan Zhou

Proceedings Volume 8959, Solid State Lasers XXIII: Technology and Devices; 895928 (2014) https://doi.org/10.1117/12.2048241
Event: SPIE LASE, 2014, San Francisco, California, United States

Abstract

For the non-uniform distribution of pump and temperature in the large aperture, high-power thin disk laser medium, a novel cooling method of multi-annular channel liquid cooling is proposed and examined both experimentally and theoretically. The temperature distribution in the gain medium is getting into uniform utilizing the method of multi-annular 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. A wonderful 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 multi-annular channel liquid cooling reduces about 88% compared with an evenly cooling. And the thermal effect has been suppressed, the experimental result is consistent well with numerical modeling. This method could be a new idea for designing the thin disk laser’s cooling system.

Citation Download Citation

Jian Mu, Guoying Feng, Huomu Yang, Hong Zhang, and Shouhuan Zhou "Multi-annular channel liquid cooled Nd:YAG thin disk laser medium", Proc. SPIE 8959, Solid State Lasers XXIII: Technology and Devices, 895928 (28 February 2014); https://doi.org/10.1117/12.2048241

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KEYWORDS

Disk lasers

Liquids

Nd:YAG lasers

Distortion

Numerical modeling

Thermal effects

Cooling systems

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