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Proceedings Paper

Numerical analysis of the temperature field in HgCdTe detector by CW laser irradiation
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Paper Abstract

Based on the heat conduction theory, a theoretical model of HgCdTe detector irradiated by 10.6μm CW laser is constructed. The thermal effect of the detector is analyzed by finite element method when the laser spot velocity is 0m/s, 4mm/s and 10mm/s respectively with the peak power density of 50KW/cm2 . The results show that, the temperature of irradiation point rises rapidly when v=0 mm/s, but the rising speed will be slower and slower and finally reaches the equilibrium temperature under the combined effect of laser irradiation and heat conduction. In the case of relative motion, the position of the peak temperature gradually shifts along the velocity direction. The peak temperature gradually decreases with the increase of the moving speed, and the width of the temperature peak gradually widens with the increasing speed. Relative motion should be considered when studying laser radiation and laser protection.

Paper Details

Date Published: 5 November 2018
PDF: 6 pages
Proc. SPIE 10811, High-Power Lasers and Applications IX, 1081116 (5 November 2018); doi: 10.1117/12.2501235
Show Author Affiliations
Xiao-dong Ren, National Univ. of Defense Technology (China)
Wu-hu Lei, National Univ. of Defense Technology (China)
Xuhui Weng, National Univ. of Defense Technology (China)

Published in SPIE Proceedings Vol. 10811:
High-Power Lasers and Applications IX
Ruxin Li; Upendra N. Singh, Editor(s)

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