Overtone Raman Scattering in Lithium Tantalate Single Crystals
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Overtone bands in the spectral range of 1300−1920 cm–1 have been found in Raman scattering spectrum of lithium tantalate single crystals. The Raman spectra were recorded in the 180° scattering geometry. The intensity of overtone transitions differs for different samples and, in some cases, is comparable with the Raman scattering intensity at the fundamental modes of a lithium tantalate single crystal.
Keywords:Raman scattering overtone lithium tantalate optical modes spectrum
This study was supported by the Russian Science Foundation, project no. 19-12-00242.
CONFLICT OF INTEREST
The authors declare that they have no conflict of interest.
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