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Proceedings Paper

Optical properties and thermal response of Au/Cr double-layer metal films induced by femtosecond lasers
Author(s): Anmin Chen; Shuchang Li; Mingxing Jin
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Paper Abstract

Femtosecond pulse laser was used to induce Au/Cr double-layer metal films. The time dependence of transient relative reflectivity was measured by optical pump-probe experiment for 400 nm pump light and 800 nm probe light. The pulse width was 90 fs. The drastic changes in reflectivity were observed, and double-layer films with different thickness of Au layer leaded to different reflectivity changes. Next, a critical points model with the Drude model was proposed to describe the permittivity of Au in the 200-1000 nm range. This model was combined with a two-temperature equation to investigate optical properties and thermal response of Au/Cr double-layer metal films induced by femtosecond lasers. The simulated results provided more physical information for femtosecond laser induced double-layer metal films.

Paper Details

Date Published: 4 May 2015
PDF: 9 pages
Proc. SPIE 9543, Third International Symposium on Laser Interaction with Matter, 95430J (4 May 2015); doi: 10.1117/12.2182009
Show Author Affiliations
Anmin Chen, Jilin Univ. (China)
Shuchang Li, Jilin Univ. (China)
Mingxing Jin, Jilin Univ. (China)


Published in SPIE Proceedings Vol. 9543:
Third International Symposium on Laser Interaction with Matter
Yury M. Andreev; Zunqi Lin; Xiaowu Ni; Xisheng Ye, Editor(s)

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