This article is cited in 13 papers

Spectroscopy of condensed matter

Quasi-elastic light scattering in congruent lithium niobate crystals

A. A. Anikiev^a, M. F. Umarov<sup>b

a</sup> Bauman Moscow State Technical University, Moscow, 105005, Russia
^b Vologda State University, Vologda, 160000, Russia

Abstract: Raman scattering spectra in the frequency range of 5–75 cm$^{-1}$ in lithium niobate samples with various structural imperfections were obtained. It is shown that the intensity of quasi-elastic light scattering on the wing of the Rayleigh line demonstrates an exponential dependence on the concentration of large-scale defects in the samples. Calibration curves for the intensity of quasi-elastic scattering dependence at low frequencies on the acoustic quality factor are constructed.

Received: 14.12.2016
Revised: 19.03.2018

DOI: 10.21883/OS.2018.07.46261.358-16

 English version: Optics and Spectroscopy, 2018, 125:1, 22–27

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