International Journal of Academic and Applied Research (IJAAR)   Year: 2022 | Volume: 6 | Issue: 11 | Page No.: 58-61 Photoelastic Properties of Lithium Tantalate Crystals Download PDF F. R. Akhmedzhanov, U. Sh. Abdirakhmonov, V. N. Avdievich Abstract: Studying the acoustic, electro-optical, and photoelastic properties of crystals used as working elements of lasers and acousto-optic devices is of great interest. In this work, the effective photoelastic constants and the anisotropy of the acousto-optic quality factor in lithium tantalate crystals are determined by the Dixon-Cohen method. The maximum values of the velocity of quasi-longitudinal (6685 m/s) and quasi-transverse (4297 m/s) acoustic waves and the maximum value of the acousto-optic quality factor M2 (8*10-15 s3/kg) have been determined in these crystals.