Преподаватели и сотрудники

Лотарев Сергей Викторович

Лотарев Сергей Викторович

Занимаемые должности

Доцент (Кафедра химической технологии стекла и ситаллов)

Телефон

(495) 495-38-88

E-mail

slotarev@muctr.ru

Сайт https://muctr.ru
Уровень образования Высшее
Квалификация

Физик

Преподаваемые дисциплины

Новые стеклообразные материалы и методы их синтеза

Учёная степень

Кандидат химических наук

Наименование направления подготовки и (или) специальности

Физика

Данные о повышении квалификации и (или) профессиональной переподготовке

«Новые педагогические технологии в электронном, дистанционном и смешанном обучении»

Общий стаж работы 13 лет (с 01.02.2006)
Стаж работы по специальности 9 лет (с 01.09.2010)

Публикации

Effect of gold nanoparticles on the spectral luminescence properties of eu3+-doped phosphate glass / G. Y. Shakhgil’dyan, M. Z. Ziyatdinova, V. V. Kovgar et al. // Glass and Ceramics. — 2019. — Vol. 76, no. 3-4. — P. 121–125. The spectral luminescence properties of Eu3+-doped potassium-aluminum-phosphate glass with thermally induced formation of gold nanoparticles in its interior were investigated. It is shown that the formation of gold clusters (pre-plasmonic particles) results in stronger luminescence of rare-earth ions while the formation of gold nanoparticles possessing a localized plasmon resonance results in weaker luminescence. [ DOI ]

Femtosecond direct laser writing in silicate glasses doped with silver and cadmium sulfide / M. P. Vetchinnikov, G. Y. Shakhgildyan, A. S. Lipatiev et al. // Journal of Physics: Conference Series. — 2019. — no. 1199. — P. 012028–1–012028–5. Femtosecond direct laser writing (DLW) in oxide glasses doped with photosensitive agents (noble metals and semiconductors) opens new routes for precise space-selective tuning of material properties and development of functional photonic devices including integrated waveguides, optical switches, and volume optical memory. In this study, we showed how DLW can be used for the spatially-selective formation of micron-sized luminescent domains in the bulk of Ag-doped and CdS-doped silicate glasses. Multiphoton ionization caused by DLW leads to local heating of glass in the focal point, which initiates the precipitation and growth of luminescent Ag nanoclusters and CdS quantum dots in the periphery of the domains. The luminescence intensity of the formed domains depends on the laser exposure parameters, such as pulse energy and number of pulses that can be used in the future for multilevel optical data recording. [ DOI ]

Laser writing of polarization-sensitive birefringence in sodium-borosilicate glass / S. V. Lotarev, A. S. Lipat’iev, S. S. Fedotov et al. // Glass and Ceramics. — 2019. — Vol. 76, no. 3-4. — P. 85–88. It is demonstrated that femtosecond laser pulses can be used to form birefringent microregions in sodium borosilicate glass with the composition 68 SiO2, 27 B2O3, 4 Na2O, and 1 Al2O3 (mol.%); the birefringence is associated with the formation of nanogratings and its slow axis is oriented perpendicular to the polarization plane of the writing laser beam. The dependences of the phase shift of the light passing through these microregions on the number and energy of the laser pulses forming them are determined. It is shown by means of confocal RS spectroscopy that the content of sodium cations decreases in the formed microregions. [ DOI ]

Ultrafast laser-induced nanogratings in sodium germanate glasses / S. V. Lotarev, S. S. Fedotov, A. I. Kurina et al. // Optics Letters. — 2019. — Vol. 44, no. 7. — P. 1564–1567. We report ultrafast laser inscription of nanogratings possessing form birefringence in binary sodium germanate glasses in a wide range of Na2O content from 3 to 22 mol.%. A minimal number of laser pulses required to induce noticeable form birefringence is shown to grow exponentially with Na2O content in glass. Atomic force microscopy showed similarity of their periodical structure and period value to those in the nanogratings formed in fused silica. A sharp pulse duration threshold below which laser pulses do not induce nanogratings in the studied glasses has been revealed. Formation of a nanograting in 22Na2O·78GeO2 at the studied conditions is accompanied by crystallization of a surrounding submicron layer and partial crystallization inside the nanograting with precipitation of Na2Ge4O9 crystals. [ DOI ]

Ultrafast-laser vitrification of laser-written crystalline tracks in oxide glasses / S. V. Lotarev, A. S. Lipatiev, T. O. Lipateva et al. // Journal of Non-Crystalline Solids. — 2019. — Vol. 516. — P. 1–8. We report a method of femtosecond laser-induced vitrification of crystalline tracks laser-written in glasses with different crystallization ability including lanthanum borogermanage, barium titanium silicate and lithium niobium silicate glasses. We have found that crystalline tracks consisting of nonlinear optical LaBGeO5 and BaTi2Si2O8 phases corresponding to glass-forming compositions could be readily amorphized by the femtosecond beam, whereas the laser-induced vitrification of a track consisting of LiNbO3 crystalline phase possessing a non-glass-forming composition is more complicated but also possible. The suggested technique provides reversibility of femtosecond laser-induced space-selective crystallization of glasses and thus extends the functionality of the direct laser writing of crystal-in-glass architectures that is important for the fabrication of novel integrated optical components and devices. [ DOI ]

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