This article is cited in 3 papers

Generation of a photoacoustic signal in two-layer transparent samples on an absorbing substrate

T. Kh. Salikhov, N. Melikkhudzha, A. Makhmalatif

Tajik National University, Dushanbe

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 $\propto\omega^{-1}$, when a free path of photons is less than the thermal diffusion length, and is proportional to $\propto\omega^{-3/2}$ in the opposite case.

Received: 21.01.2019
Revised: 21.01.2019
Accepted: 15.02.2019

DOI: 10.21883/PJTF.2019.09.47710.17707

 English version: Technical Physics Letters, 2019, 45:5, 450–452

Bibliographic databases:

•