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Proceedings Paper

Study on the photothermal characteristics of the two layers of uniaxial materials irradiated by continuously modulated laser
Author(s): Changchun Yan; Guogang Xue; Cheng Liu; Hao Chen
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Paper Abstract

According to heat conduction equations and especial boundary conditions, the photothermal emission distribution of two-layer thermally uniaxial thin films has been acquired in the cylindrical coordinate system by Hankel transformation and retransformation. Applying specific parameters to two-layer thermally uniaxial thin films, the ones are discussed. The larger are the ratios of longitudinal heat conductions and transverse ones of the thin films with high thermal diffusivity, the larger are the phase changes of the photothermal signals in the thin films. Neverthless, for the thin film with low thermal diffusion, the different ratios of longitudinal heat conductions and transverse ones are potty influences on photothermal signals. And, the smaller are optical absorption coefficients, the more evident are the influences on phases because of frequency changes.

Paper Details

Date Published: 10 January 2005
PDF: 7 pages
Proc. SPIE 5640, Infrared Components and Their Applications, (10 January 2005); doi: 10.1117/12.575591
Show Author Affiliations
Changchun Yan, Xuzhou Normal Univ. (China)
Guogang Xue, Xuzhou Normal Univ. (China)
Cheng Liu, Xuzhou Normal Univ. (China)
Hao Chen, Xuzhou Normal Univ. (China)

Published in SPIE Proceedings Vol. 5640:
Infrared Components and Their Applications
Haimei Gong; Yi Cai; Jean-Pierre Chatard, Editor(s)

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