Spatial Anisotropy of Iinduced Optical Effects in Crystalline Materials

Major: Applied Physics and Nanomaterials
Code of subject: 8.105.00.M.028
Credits: 3.00
Department: Applied Physics and Nanomaterials Science
Lecturer: Professor, D.Sci. Andrushchak Anatoliy Stepanovych
Semester: 4 семестр
Mode of study: денна
Learning outcomes: As a result of studying the discipline the student must: - be able to conduct an analytical description of spatial anisotropy and its geometric representation on the basis of indicative and extreme surfaces; - to acquire knowledge about the geometric representation of the spatial anisotropy for the linear electro-optical effect in crystals of different classes of symmetry; - be able to analyze spatial anisotropy on the basis of indicative surfaces for the longitudinal and transverse piezo- and elastic-optical effect in uniaxial and biaxial crystals; - understand the physical essence and have methods for studying the cross piezoelectro-optical effect in crystals; - know the prospects for improving the efficiency of acousto-optical interactions in anisotropic materials; - be able to optimize and study the effectiveness of acousto-optical cells.
Required prior and related subjects: - pre-requisites: physics, modern methods of physical researches, basics of crystal optics; - co-requisites: functional materials of molecular energetics, physics of quantum-sized systems, physics of anisotropic materials.
Summary of the subject: 1. Spatial anisotropy of the linear electro-optical effect in the studied crystalline materials: - indicative and extreme surfaces, their description and geometric representation; - spatial anisotropy of the linear electro-optical effect in uniaxial crystals on the example of lithium niobate and langasite crystals; - anisotropy of the electro-optical effect in other investigated crystalline materials. 2. Spatial anisotropy of piezo- and elasto-optical effect: - indicative surfaces for longitudinal and transverse piezoelectric effect.Indicative surfaces of piezo-induced path difference; - geometric representation of the anisotropy of piezo- and elasto-optical effects in uniaxial crystals; - spatial anisotropy of the photoelastic effect in cubic and biaxial crystals; - cross piezo-electro-optical effect in crystals. 3. Improving the efficiency of acousto-optical interactions in the studied materials: - spatial anisotropy of the acousto-optical effect in uniaxial crystals on the example of lithium niobate and langasite crystals; - other researched materials and analysis of spatial anisotropy of their acousto-optical effect; - optimization and study of the efficiency of acousto-optical cells.
Assessment methods and criteria: Exam, defense of laboratory works, defense of individual research task; - current control (40%): surveys in laboratory classes, defense of reports (20%), defense of individual research tasks (20%); - final control (60%): exam - written component (50%), oral component (10%).
Recommended books: 1. A.S. Andrushchak, O.A. Buryy, N.A. Andrushchak, N.M. Demyanyshyn Spatial anisotropy of induced optical effects in crystalline materials. Volume 2: Electro-, piezo-, elastо- and acousto-optical effects in the studied crystals.. – Lviv: Prostir M, 2021. – 330 p. (in Ukrainian) 2. O. Buryy, N. Andrushchak, N. Demyanyshyn, and A. Andrushchak, Determination of acousto-optical effect maxima for optically isotropic crystalline material on the example of GaP cubic crystal // Journal of the Optical Society of America B. – 2019. – V.36, No.8. – P.2023-2029. 3. A. Andrushchak, O. Buryy, N. Andrushchak, Z. Hotra, O. Sushynskyi, G. Singh, V. Janyani, I. Kityk, General Method of Extreme Surfaces for Geometry Optimization of the Linear Electro-Optic Effect on Example of LiNbO3:MgO Crystal // Applied Optics.– 2017. –V. 56, No.22. – P. 6255-6262.