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Information × Registration Number 0223U004710, 0120U104900 , R & D reports Title Experimental-theoretical study and prediction of photoelastic properties of crystalline materials for control devices for electromagnetic radiation popup.stage_title Head Mytsyk Bohdan H., Доктор фізико-математичних наук Registration Date 30-11-2023 Organization Physico-Mechanical Institute named after GV Karpenko of the National Academy of Sciences of Ukraine popup.description2  Photoelastic (piezo-, elastо-, and acousto-optical) characteristics of materials promising for photo¬elastic and acousto-optical (AO) modulation of light were investigated using the experimental interfero¬metric method and the quantum-mechanical calculation method (based on the purchased CRYS¬TAL- 17 program). Namely, a number of representatives of the А2ВХ4 group (K2SO4:Cu2+, (NH4)2BeF4), the langazite group (CGG, CTGS, CNGS, BTGS, CNAS), crystals with a scheelite structure (CaMoO4, CdMoO4, PbWO4, BaWO4), and as well as the isotropic chalcohalide system 65GeS2-25Ga2S3-10CsCl, activated by the rare-earth europium ion (Er3+). Part of the experimental data is compared with the data of quantum-mechanical calculation. A conclusion was made about the effectiveness of the quantum-mechanical method of calculating the photoelastic characteristics of crystalline materials, including regarding the calculation of the spectral dependences of these characteristics. The surfaces of the spatial distribution of the photoelastic characteristics of the stu¬died materials were constructed, the maxima of these surfaces and their angular coordinates were found. AO efficiency was calculated for these maxima. A conclusion was made about the prospects of using the investigated optical materials in photoelastic and AO light modulation devices, inclu¬ding in the ultraviolet region of the spectrum. Product Description popup.authors Demianyshyn Nataliia Mytsyk Bohdan H. Rizun Yuliia Ya. Rudysh Myron Ya. Stadnyk Vasyl Yosifovych Shchepanskyi Pavlo A. popup.nrat_date 2023-11-30 Close