Персона: Злоказов, Евгений Юрьевич
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Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
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Евгений Юрьевич
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- ПубликацияОткрытый доступBreaking of Wavelength-Dependence in Holographic Wavefront Sensors Using Spatial-Spectral Filtering(2023) Stsepuro, N.; Kovalev, M.; Zlokazov, E. Y.; Kudryashov, S.; Злоказов, Евгений ЮрьевичNowadays, wavefront sensors are widely used to control the shape of the wavefront and detect aberrations of the complex field amplitude in various fields of physics. However, almost all of the existing wavefront sensors work only with quasi-monochromatic radiation. Some of the methods and approaches applied to work with polychromatic radiation impose certain restrictions. However, the contemporary methods of computer and digital holography allow implementing a holographic wavefront sensor that operates with polychromatic radiation. This paper presents a study related to the analysis and evaluation of the error in the operation of holographic wavefront sensors with such radiation.
- ПубликацияОткрытый доступComputer-Generated Holography Methods for Data Page Reconstruction Using Phase-Only Medium(2023) Minikhanov, T. Z.; Zlokazov, E. Y.; Cheremkhin, P. A.; Starikov, R. S.; Evtikhiev, N. N.; Злоказов, Евгений Юрьевич; Черёмхин, Павел Аркадьевич; Стариков, Ростислав Сергеевич; Евтихиев, Николай НиколаевичAchievements in the field of high-speed spatial modulation electrooptic components provide the possibility to create perspective optical-digital diffractive systems for information storage and processing that outperform modern electronic counterparts by utilizing throughput, energy efficiency, and reliability. This work presents a study of computer-generated holography methods that allow the formation of spatially-modulated information signals (data pages) with high accuracy using phase-only spatial light modulators. Computer-generated Fourier hologram fringe patterns were formed using bipolar intensity and double-phase coding. Numerical and experimental results of both methods’ implementation are compared. It was determined that bipolar intensity holograms provide higher data density on the data page if complex digital modulation methods such as multilevel amplitude and phase or quadrature modulation are used to represent data points. Double-phase coding can offer perspective for multilevel amplitude or multilevel intensity modulated data page reconstruction; however, exact control of phase modulation characteristics is required to obtain high reconstruction quality.