Персона: Родин, Владислав Геннадьевич
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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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Владислав Геннадьевич
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- ПубликацияОткрытый доступОптические системы с синтезом импульсного отклика для обработки информации в пространственно-некогерентном и немонохроматическом излучении(НИЯУ МИФИ, 2022) Родин, В. Г.; Родин, Владислав Геннадьевич; Евтихиев, Н. Н.
- ПубликацияОткрытый доступWhat Binarization Method Is the Best for Amplitude Inline Fresnel Holograms Synthesized for Divergent Beams Using the Direct Search with Random Trajectory Technique?(2023) Ovchinnikov, A. S.; Krasnov, V. V.; Cheremkhin, P. A.; Rodin, V. G.; Savchenkova, E. A.; Starikov, R. S.; Evtikhiev, N. N.; Овчинников, Андрей Сергеевич; Черёмхин, Павел Аркадьевич; Родин, Владислав Геннадьевич; Савченкова, Екатерина Алексеевна; Стариков, Ростислав Сергеевич; Евтихиев, Николай НиколаевичFast reconstruction of holographic and diffractive optical elements (DOE) can be implemented by binary digital micromirror devices (DMD). Since micromirrors of the DMD have two positions, the synthesized DOEs must be binary. This work studies the possibility of improving the method of synthesis of amplitude binary inline Fresnel holograms in divergent beams. The method consists of the modified Gerchberg–Saxton algorithm, Otsu binarization and direct search with random trajectory technique. To achieve a better quality of reconstruction, various binarization methods were compared. We performed numerical and optical experiments using the DMD. Holograms of halftone image with size up to 1024 Г— 1024 pixels were synthesized. It was determined that local and several global threshold methods provide the best quality. Compared to the Otsu binarization used in the original method of the synthesis, the reconstruction quality (MSE and SSIM values) is improved by 46% and the diffraction efficiency is increased by 27%.
- ПубликацияОткрытый доступMachine learning methods for digital holography and diffractive optics(2020) Cheremkhin, P.; Evtikhiev, N.; Krasnov, V.; Rodin, V.; Rymov, D.; Starikov, R.; Черёмхин, Павел Аркадьевич; Евтихиев, Николай Николаевич; Родин, Владислав Геннадьевич; Рымов, Дмитрий Андреевич; Стариков, Ростислав Сергеевич© 2020 The Authors. Published by Elsevier B.V.With active advancements in computer and computational technologies, deep learning has found its way into many fields. Recently it has become an active topic of research in diffractive optics and holography. Deep leaning techniques have been shown to benefit greatly from abundant information offered by using both amplitude and phase of the optical field. These techniques can be applied for image reconstruction, zero-order suppression, hologram generation, etc. In this paper various learning based methods for enhancing digital and computer-generated holography are analysed. We demonstrate a deep learning model for generating diffractive optical elements from an arbitrary intensity-only image. Numerical evaluation of model's performance has shown that generated diffractive optical elements are of acceptable quality.
- ПубликацияОткрытый доступOptical encryption of digital information in the scheme with spatially incoherent illumination based on micromirror light modulators(2020) Evtikhiev, N. N.; Krasnov, V. V.; Kuzmin, I. D.; Molodtsov, D. Y.; Rodin, V. G.; Starikov, R. S.; Евтихиев, Николай Николаевич; Родин, Владислав Геннадьевич; Стариков, Ростислав Сергеевич© 2020 The Authors. Published by Elsevier B.V.State of the art micromirror DMD spatial light modulators (SLM) offer unprecedented frame rate of up to 32000 frames per second. This, in conjunction with fast digital camera, makes it possible to create high speed optical encryption systems. Experimental setup for optical encryption under spatially incoherent illumination based on two DMD SLMs had been created. Input information is displayed by first SLM, encoding hologram-by second SLM. Results of optical experiment demonstrate successful encryption and decryption of digital information in the form of QR code image.
- ПубликацияОткрытый доступLow phase noise optoelectronic oscillator based on a microwave multiplexer: feasibility assessment(2025) Kazmin, M. I.; Nebavskiy, V. A.; Rodin, V. G.; Starikov, R. S.; Tretyakov, D. A.; Cheremkhin, P. A.; Небавский, Всеволод Алексеевич; Родин, Владислав Геннадьевич; Стариков, Ростислав Сергеевич; Черёмхин, Павел Аркадьевич; Казьмин, Максим Игоревич