Volodymyr T. Adamiv

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The high optical quality glasses with Li<sub>2</sub>B<sub>4</sub>O<sub>7</sub>:Eu, CaB<sub>4</sub>O<sub>7</sub>:Eu, and LiCaBO<sub>3</sub>:Eu compositions containing 0.5 and 1.0 mol. % Eu<sub>2</sub>O<sub>3</sub> have been obtained by standard glass technology. Using electron paramagnetic resonance (EPR) and optical spectroscopy it was shown that the Eu(More)
"The chromium site in doped glassy lithium tetraborate" (2014). Peter Dowben Publications. Paper 261. h i g h l i g h t s g r a p h i c a l a b s t r a c t Adoption of the Li þ site for chromium dopants in lithium tetraborate identified. Increased oxygen coordination for glass over the crystalline lithium tetraborate. Distortions about the doping chromium(More)
In the current work we report on the synthesis of LiKB(4)O(7), Li(2)B(6)O(10), and LiCsB(6)O(10) borate glasses. The results for their piezo-optic, acousto-optic, acoustic, elastic, refractive, optical transmission, and optical resistance properties are also presented. It is shown that some of these glasses represent efficient acousto-optic materials that(More)
Experimental studies and analysis of acousto-optic diffraction in alpha-BaB(2)O(4) and Li(2)B(4)O(7) crystals are given. Ultrasonic wave velocity, elastic compliance and stiffness coefficients, and piezo-optic and photoelastic coefficients of alpha-BaB(2)O(4) and Li(2)B(4)O(7) crystals are determined. The acousto-optic figure of merit has been estimated for(More)
The series of V-doped glasses with Li<sub>2</sub>O-2B<sub>2</sub>O<sub>3</sub> (Li<sub>2</sub>B<sub>4</sub>O<sub>7</sub>), 1/2(Li<sub>2</sub>O-K<sub>2</sub>O-4B<sub>2</sub>O<sub>3</sub>), (LiKB<sub>4</sub>O<sub>7</sub>), CaO-2B<sub>2</sub>O<sub>3</sub> (CaB<sub>4</sub>O<sub>7</sub>) and 1/2(Li<sub>2</sub>O-2CaO-B<sub>2</sub>O<sub>3</sub>)(More)
We report the results of comprehensive studies of the piezo-optic and elasto-optic effects in lithium tetraborate crystals, Li<sub>2</sub>B<sub>4</sub>O<sub>7</sub>. The full matrices of piezo-optic and elasto-optic coefficients are obtained using a recently developed method based on four-point bending. On this basis, we have estimated the acousto-optic(More)
The four dopants (Nd, Gd, Dy, and Er) substitutionally occupy the Li + sites in lithium tetraborate (Li 2 B 4 O 7 : RE) glasses as determined by analysis of the extended X-ray absorption fine structure. The dopants are coordinated by 6-8 oxygen at a distance of 2.3 to 2.5 Å, depending on the rare earth. The inverse relationship between the RE-O coordination(More)
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