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Generation of a Photoacoustic Signal in Two-Layer Transparent Samples on an Absorbing Substrate

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Abstract

A theory of generation of a photoacoustic signal in a two-layer transparent sample on an absorbing substrate to a buffer gas of a photoacoustic cell has been developed. We have shown that the frequency dependence of the photoacoustic signal amplitude excited in the absorbing substrate obeys the law ∝ ω–1, when a free path of photons is less than the thermal diffusion length, and is proportional to ω–3/2 in the opposite case.

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Correspondence to T. Kh. Salikhov.

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Translated by N. Podymova

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Salikhov, T.K., Melikkhudzha, N. & Makhmalatif, A. Generation of a Photoacoustic Signal in Two-Layer Transparent Samples on an Absorbing Substrate. Tech. Phys. Lett. 45, 450–452 (2019). https://doi.org/10.1134/S1063785019050146

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  • DOI: https://doi.org/10.1134/S1063785019050146

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