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Proceedings Paper

Numerical approach to temperature and thermal stress in direct-liquid-cooled Nd:YAG thin disk laser medium
Author(s): Zhibin Ye; Zhen Cai; Bo Tu; Xiaojun Wang; Jianli Shang; Yi Yu; Ke Wang; Qingsong Gao; Chun Tang; Chong Liu
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Paper Abstract

A Nd:YAG thin disk is end-pumped by two high power laser diodes and the fluid flows in a narrow channel to cool it directly. The forced convection occurs between the fluid and disk. A system is designed to measure the convective heat transfer coefficient with different flow rate. With the measured coefficient, the temperature and thermal stress in the disk are numerically analyzed. The maximum permissible thermal load is calculated, which increases with the increasing flow rate. Furthermore, the optical path different distribution is numerically calculated by considering of the thermo-optical effect, and thermal expansion at the maximum permissible thermal load. These results are useful for design of a direct-liquid-cooled Nd:YAG thin disk laser.

Paper Details

Date Published: 3 February 2015
PDF: 6 pages
Proc. SPIE 9255, XX International Symposium on High-Power Laser Systems and Applications 2014, 92550T (3 February 2015); doi: 10.1117/12.2068168
Show Author Affiliations
Zhibin Ye, Zhejiang Univ. (China)
China Academy of Engineering Physics (China)
Zhen Cai, China Academy of Engineering Physics (China)
Bo Tu, China Academy of Engineering Physics (China)
Xiaojun Wang, China Academy of Engineering Physics (China)
Jianli Shang, China Academy of Engineering Physics (China)
Yi Yu, China Academy of Engineering Physics (China)
Ke Wang, China Academy of Engineering Physics (China)
Qingsong Gao, China Academy of Engineering Physics (China)
Chun Tang, China Academy of Engineering Physics (China)
Chong Liu, Zhejiang Univ. (China)


Published in SPIE Proceedings Vol. 9255:
XX International Symposium on High-Power Laser Systems and Applications 2014
Chun Tang; Shu Chen; Xiaolin Tang, Editor(s)

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