Stimulated multifrequency Raman scattering of light in a polycrystalline sodium bromate powder

V S Gorelik; A V Skrabatun

doi:10.1016/j.saa.2020.118889

Stimulated multifrequency Raman scattering of light in a polycrystalline sodium bromate powder

Spectrochim Acta A Mol Biomol Spectrosc. 2021 Jan 15:245:118889. doi: 10.1016/j.saa.2020.118889. Epub 2020 Aug 28.

Authors

V S Gorelik¹, A V Skrabatun²

Affiliations

¹ P.N. Lebedev Physical Institute, Russian Academy of Sciences, 53, Leninskiy Prospekt, Moscow, Russia; Bauman Moscow State Technical University, ul. Baumanskaya 2-ya, 5, Moscow, Russia.
² P.N. Lebedev Physical Institute, Russian Academy of Sciences, 53, Leninskiy Prospekt, Moscow, Russia. Electronic address: skrabatunav@lebedev.ru.

PMID: 32920443
DOI: 10.1016/j.saa.2020.118889

Abstract

The observation of multifrequency stimulated Raman scattering of light in a thin powder layer of a gyrotropic crystal of sodium bromate when excited by intense ultrashort pulses of the second optical harmonic (λ = 532 nm) of an yttrium aluminum garnet laser is reported. Five Stokes and anti-Stokes satellites corresponding to the excitation of the intramolecular optical mode of NaBrO₃ crystal were present in the recorded spectra. In addition, Raman satellites corresponding to the excitation of lattice modes, as well as their combinations with intramolecular modes, were found in the spectra of stimulated Raman scattering. The prospects of using stimulated Raman scattering spectroscopy for express analysis of gyrotropic media: gyrotropic polycrystals, crystalline amino acids, proteins, DNA, etc. have been established.

Keywords: Disordered media; Frequency comb; Lattice mode; Raman scattering; Sodium bromate.