Registration Number
0226U003114,
(0123U101695)
, R & D reports
Title
Innovative high-performance bulk, film and nanocomposite materials for electro- and non-linear optical devices of micro- and nanoelectronics
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Створення макетів нелінійно-оптичних комірок. Завершення досліджень ЕОЕ на оптичних матеріалах за п. 4.1 Проєкту, вироблення рекомендацій для прикладної реалізації результатів дослідження ЕОЕ.
Head
Zachek Ihor R., Доктор фізико-математичних наук
Registration Date
17-03-2026
Organization
Lviv Polytechnic National University
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Search and creation of materials to ensure higher efficiency of electro-optical light beam control devices and non-linear optical devices due to the use of optimal spatial orientation of active device elements and/or technological approaches that will improve the properties of known active media (nanomatrices filled with crystalline material or liquid crystal with optimal (or close to it) spatial orientation of nanocrystallites); in addition, it is planned to prove the effectiveness of a new effect – the diffraction electro-optical one.
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A nanocomposite compound based on anodized aluminum oxide nanomatrix filled with bismuth borate nanocrystallites was synthesized; the effect of second harmonic generation indicated by nanocrystallites was investigated. It should be assessed that the obtained results on the generation of second harmonic in synthesized nanocomposites are priority and deserve further intensive study. The electro-optical effect (EOE) of Ca3TaAl3Si2O14 (CTAS) crystals belonging to the langasite group was investigated; in order to verify the reliability of the obtained results, used on the basis of various independent electro-optical interaction geometries to determine a specific component of the matrix of electro-optical coefficients (EOC), as well as used to compare the results obtained on the basis of interferometry and polarization optics. Based on the EOC matrix for CTAS crystals, the indicative surfaces (IS) of linear EOE were constructed, which describe the space of EOE anisotropy in these crystals. It was shown that at the maximum values of IS, the CTAS crystal can be suitable for modulation of powerful electromagnetic radiation in the ultraviolet region of the spectrum. To find the maximum significance of EOE for CTAS crystals by the induced electric field by the optical difference, the method of constructing extreme surfaces (ES) is used. Based on the ES analysis, it is shown that the highest efficiency of electro-optical modulation of light by the path difference can be achieved on a 20/X-cut sample. By interferometry, the full matrices of piezo-optical coefficients (POCs) of borate glass Li2B4O7 (pure and doped silver), СTAS crystals and Ba3TaGa3Si2O14 (BTGS) were measured. It is shown that the silver ion-doped glass has significantly higher values of the piezo- and elasto-optic coefficients (pim і рik), as well as the acousto-optic quality factor М2 (2.00·10-15 s3/kg), which is comparable to М2 of quartz and crystalline Li2B4O7.
Product Description
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Anatolii Andrushchak
Bohdan Mytsyk
Nataliia Demianyshyn
Mariia Vistak
Oleh Buryi
Andrii Bendak
Olha Rybytska
Bohdan Venhryn
Roman Shvets
Oksana Andrushchak
Ihor Senko
Vasyl Baluk
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2026-03-17
