Affiliation:
1. Kazan (Volga region) Federal University
2. Kazan E. K. Zavoisky Physical-Technical Institute
Abstract
The acoustic properties of LiCaAlF6 crystals and the annealing procedure impact on them were studied. The velocities of longitudinal and shear ultrasonic waves along the direction of the optical c-axis of the crystals were measured by laser acoustics, and the mechanical constants were determined: modules of elasticity, all-round compression, shear, and Poisson's ratio. It has been established that the attenuation coefficient of ultrasonic waves in the 1-15 MHz frequency range can serve as a characteristic of the optical perfection of the crystals. The effect of ultrasonic annealing of LiCaAlF6 crystal samples under prolonged exposure by pulsed ultrasound was discovered.
Publisher
The Russian Academy of Sciences
Reference5 articles.
1. Semashko V.V. Problems in searching for new solid-state UV-and VUV-active media: The role of photodynamic processes // Phys. Solid State. 2005. V. 47. P. 1507-1511.
2. Demirbas U. Cr: Colquiriite Lasers: Current Status and Challenges for Further Progress // Progress in Quantum Electronics. 2019. V. 68. Art. № 100227.
3. Shavelev A.A., Shakirov A.A., Lukinova E.V., Aglyamov R.D., Naumov A.K., Semashko V.V., Nizamutdinov A.S., Palianov P.A., Panchenko Yu.N., Bobrovnikov S.M. Growing LiCAF crystal with 3 at% Cr3+ and studying its properties // Proceedings of SPIE - The International Society for Optical Engineering. 2019. V. 11322. Art. № 113221L.
4. Ландау Л.Д., Лифшиц Е.М. Теория упругости / Издание 5-е, стереотипное. М.: Физматлит, 2007. 259 с. (Теоретическая физика, т. VII). ISBN 5-9221-0122-6.
5. Справочник по технической акустике. Пер. с нем. / Под ред. М. Хекла и X.А. Мюллера. Ленинград: Изд-во Судостроение, 1980. 440 с.