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Proceedings Paper

Photothermal measurements for plates
Author(s): Jerzy Bodzenta; Jacek Mazur; Roman J. Bukowski; Zygmunt Kleszczewski
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Paper Abstract

Basing on a 1D model of heat propagation in gas-sample-gas structure, a method for determining thermal properties of plat-like samples is proposed. The method assumes photodeflection detection of photothermal signal. In the method, a signal frequency dependence is measured. It is shown that in high frequency limit, the signal depends only on thermal properties of gas. Excluding the gas contribution to the measured dependence a signal part connected with the sample can be calculated. Fitting theoretical curves to obtained data, one can estimate thermal diffusivity of the sample. Methods for determining thermal diffusivity of gas and distance between a probe beam and the sample surface are also proposed. A good agreemnt between theory and experiment is obtained.

Paper Details

Date Published: 4 October 1995
PDF: 7 pages
Proc. SPIE 2643, Acousto-Optics and Applications II, (4 October 1995); doi: 10.1117/12.222756
Show Author Affiliations
Jerzy Bodzenta, Silesian Technical Univ. (Poland)
Jacek Mazur, Silesian Technical Univ. (Poland)
Roman J. Bukowski, Silesian Technical Univ. (Poland)
Zygmunt Kleszczewski, Silesian Technical Univ. (Poland)


Published in SPIE Proceedings Vol. 2643:
Acousto-Optics and Applications II
Antoni Sliwinski; Piotr Kwiek; Bogumil B. J. Linde; A. Markiewicz, Editor(s)

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