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Proceedings Paper

Influence of the mechanical coupling to aluminum target by Nd:YAG pulsed laser with CW laser
Author(s): Y. Cai; Y. X. Zhu; M. L. Zhou; C. H. Wei
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Paper Abstract

To research the influence of initial temperature on the laser ablation impulse coupling coefficient, we have established an experimental setup that can response micro impulse of μNs level. The setup mainly contains the impact pendulum with tiny-damp and the micro-angle detector based on laser diffuse reflection. The different initial temperatures were realized by continuum laser irradiation with different intensities and time duration. Experiments were carried out to show the effect of initial temperature on the impulse coupling coefficient by Nd:YAG laser pulses. The results show that the impulse coupling coefficients rapidly increased with the increases of the laser intensity. When incident laser intensity is about 5.2J/cm2, the coefficient increased to the maximum. Then the impulse coupling coefficients decreased gradually. Theoretical analysis and the experimental results show that the impulse coefficient increase at the first phase result from increase energy of plasma, while the coefficient decrease at the second phase derived mainly from the target softening under high temperature.

Paper Details

Date Published: 12 May 2017
PDF: 5 pages
Proc. SPIE 10173, Fourth International Symposium on Laser Interaction with Matter, 101730M (12 May 2017); doi: 10.1117/12.2268347
Show Author Affiliations
Y. Cai, Northwest Institute of Nuclear Technology (China)
Y. X. Zhu, Northwest Institute of Nuclear Technology (China)
M. L. Zhou, Northwest Institute of Nuclear Technology (China)
C. H. Wei, Northwest Institute of Nuclear Technology (China)


Published in SPIE Proceedings Vol. 10173:
Fourth International Symposium on Laser Interaction with Matter
Yongkun Ding; Guobin Feng; Dieter H. H. Hoffmann; Jianlin Cao; Yongfeng Lu, Editor(s)

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