4 October 1995 Photothermal measurements for plates
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Proceedings Volume 2643, Acousto-Optics and Applications II; (1995) https://doi.org/10.1117/12.222756
Event: Acousto-Optics and Applications VI, 1995, Gdansk-Jurata, Poland
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.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jerzy Bodzenta, Jacek Mazur, Roman J. Bukowski, Zygmunt Kleszczewski, "Photothermal measurements for plates", Proc. SPIE 2643, Acousto-Optics and Applications II, (4 October 1995); doi: 10.1117/12.222756; https://doi.org/10.1117/12.222756
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