Research of photorefractive properties in lithium niobate crystals by raman and photoinduced light scatering
N.V. Sidorov, N.A. Teplyakova, M.N. Palatnikov
I.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials KSC RAS
Abstract: In Raman spectra of LiNbO3 crystals with photorefractive response in Y(ZX)Y scattering geometry a significant widening was detected of the band with frequency 630 cm-1 4A1(TO) that corresponds to totally symmetrical vibrations of oxygen octahedra. Any analogous line widening was not observed in Y(ZZ)Y scattering geometry. Not only photorefractive effect but also degree of oxygen octahedra distortion contributes to the width of this band.
Keywords: single crystal, lithium niobate, doping, Raman spectroscopy, photoinduced light scattering, photorefraction.
Sidorov, N.V. Research of photorefractive properties in lithium niobate crystals by raman and photoinduced light scatering / N.V. Sidorov, N.A. Teplyakova, M.N. Palatnikov // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials: Interuniversity collection of proceedings / Ed. by V.M. Samsonov, N.Yu. Sdobnyakov. – Tver: TSU, 2017. – I. 9. – P. 442-448.
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