Jpn. J. Appl. Phys. 20 (1981) pp. 361-367 |Next Article| |Table of Contents|
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Photoacoustic Spectroscopy Theory for Multi-Layered Samples and Interference Effect
Department of Electronic Engineering, Faculty of Engineering, Osaka University
(Received September 29, 1980; accepted for publication November 15, 1980)
The Rosencwaig-Gersho theory of photoacoustic spectroscopy has been expanded into the two-layer model and the photoacoustic signal in the multi-layer model has been deduced from its approximations in special cases.
Furthermore, the photoacoustic signal is discussed considering multi-reflection of the light in a sample. This calculation accounts for the interference effect on photoacoustic signals. As an example, the interference theory was applied to a sample of silicon on sapphire (SOS), which showed considerable effect of interference.
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