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Linear Dichroism Spectra of Doped Calcium Gallogermanate Crystals

100%
Shopa Y., Ftomyn N.
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|
issue 1
114-116
EN
Polarized absorption and linear dichroism spectra of chromium and manganese doped gallogermanate (Ca_{3}Ga_{2}Ge_{4}O_{14}) crystals were measured and analyzed. Electronic transitions were identified and crystal field parameters have been determined. The value of linear dichroism obtained at the wavelength of 633 nm was compared with polarimetric measuring data for chromium doped Ca_{3}Ga_{2}Ge_{4}O_{14} crystals.
2
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Calculation of Linear Electro-Optic Coefficients in La₃Ga₅SiO₁₄ Crystals

81%
Ftomyn N., Shopa Y., Sudak I.
Acta Physica Polonica A
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2018
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vol. 133
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issue 4
933-935
EN
The values of electronic polarizabilities of La³⁺, Ga³⁺, Si⁴⁺, O²¯ ions are specified using new experimental data about optical activity of La₃Ga₅SiO₁₄ crystals. A calculation technique based on the dipole electron shifting model is applied to estimate linear electrooptic coefficients for the La₃Ga₅SiO₁₄. Wavelength dependences of the both linear electro-optic tensor components r₁₁ and r₄₁ are calculated.
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