Rastrygin Daniil

@tusur.ru

Department of Microwave and Quantum Radio Engineering
Tomsk State University of Control Systems and Radioelectronics

Rastrygin Daniil


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https://researchid.co/rastrygind

RESEARCH, TEACHING, or OTHER INTERESTS

Physics and Astronomy, Polymers and Plastics
9

Scopus Publications

Scopus Publications

  • Diffraction Characteristics of Electrically Controlled Multiplexed Chirped Multilayer Inhomogeneous Holographic Diffraction Structures Based on Polymer-Dispersed Liquid Crystals
    V. O. Dolgirev, D. S. Rastrygin, S. N. Sharangovich
    Bulletin of the Russian Academy of Sciences Physics, 2026
    Abstract An analytical model was developed to describe optical diffraction by multiplexed chirped multilayer inhomogeneous diffraction structures formed in polymer-dispersed liquid crystals. Numerical simulation revealed patterns of broadening angular selectivity and reducing diffraction efficiency in the studied structures with a change in the grating period. Control of the type of angular selectivity and the level of diffraction efficiency by applying an external electric field, taking into account the polarization state of the readout radiation, was also demonstrated.
  • Electrically Controlled Optical Spectral Filter for Dense Wavelength Division Multiplexing Communication Systems Based on Chirped Multilayer Diffraction Polymer-Dispersed Liquid Crystal Structures
    D. S. Rastrygin, D. M. Chubarov, Y. A. Altukhov, V. O. Dolgirev, S. N. Sharangovich
    Bulletin of the Russian Academy of Sciences Physics, 2025
    Abstract We have presented a theoretical model of light diffraction on multilayer inhomogeneous holographic diffraction structures formed in polymer-dispersed nematic liquid crystals with a spatially varying period. Numerical simulation of the diffraction characteristics of such structures was performed to evaluate their performance as optical spectral filters for dense wavelength division multiplexing communication systems. The results obtained can serve as a basis for the further development of spectral filters.
  • Electrically controlled optical spectral filters for DWDM communication networks based on multiplexed three-layer holographic photopolymer-liquid crystal diffraction structures
    V.О. Dolgirev, D. S. Rastrygin, S.N. Sharangovich
    Computer Optics, 2025
    This paper presents the diffraction characteristics of electrically controlled multiplexed three-layer holographic diffraction structures formed in photopolymer materials with a high proportion of nematic liquid crystals. The results obtained demonstrate the possibility of using multilayer holographic diffraction structures as the main element for electrically controlled optical spectral filters for dense wavelength division multiplexing communication networks.
  • Transformation of Selective Characteristics of Electrically Controlled Chirped Multilayer Inhomogeneous Diffraction Structures Based on Photopolymerizing Composites with Nematic Liquid Crystals
    S. N. Sharangovich, V. O. Dolgirev, D. S. Rastrygin
    Bulletin of the Russian Academy of Sciences Physics, 2025
    Abstract An analytical model was developed for optical radiation diffraction on chirped multilayer inhomogeneous diffraction structures formed by the holographic method in photopolymerizing composites with nematic liquid crystals having smooth optical heterogeneity in layer thickness. Numerical calculation showed that the chirping method can multiply broaden the angular and spectral characteristics of multilayer inhomogeneous holographic diffraction structures formed in photopolymerizing composites with nematic liquid crystals.
  • Diffraction of Light on Multiplexed Multilayer Holographic Diffraction Structures with Varying Periods
    D. S. Rastrygin, V. O. Dolgirev, S. N. Sharangovich
    Bulletin of the Russian Academy of Sciences Physics, 2024
    Abstract We developed theoretical models of light diffraction on multiplexed multilayer inhomogeneous holographic diffraction structures formed in a photopolymer material with varying periods is presented and numerical calculation of diffraction characteristics for such structures are performed. The results received can serve as a basis for further development of spectral filters.
  • Studying the Diffraction of Light on Electrically Controlled Multiplexed Multilayer Inhomogeneous Holographic Diffraction Structures Based on Photopolymerizing Compositions with Nematic Liquid Crystals
    S. N. Sharangovich, V. O. Dolgirev, D. S. Rastrygin
    Bulletin of the Russian Academy of Sciences Physics, 2024
    Abstract An analytical model is developed for the diffraction of optical radiation on multiplexed multilayer inhomogeneous diffraction structures formed holographically in photopolymerizing compositions with nematic liquid crystals that have smooth optical inhomogeneity across the thickness of layers. Numerical calculations show that when an electric field with different polarities is applied to the diffraction layers and the readout beam’s azimuth of polarization is varied, a diffracted beam can be transformed with a strong shift in its angular selectivity. This allows the spectral bandwidth to be quadrupled, relative to conventional multilayer diffraction structures.
  • The Kinetics of the Formation of Multiplexed Chirped Multilayer Photopolymer–Liquid Crystal Diffraction Structures
    D. S. Rastrygin, S. N. Sharangovich
    Bulletin of the Russian Academy of Sciences Physics, 2023
    Abstract We presented a generalized analytical model that considers the temporary change in the initial conditions of holographic formation because of a photo-induced change in the optical absorption of multiplexed chirped multilayer inhomogeneous holographic diffraction structures formed in a photopolymer material with a high proportion of nematic liquid crystals. Numerical calculation of the kinetics of formation and spatial profile of the first harmonic of the refractive index for each recorded grating of each layer is carried out. The results obtained demonstrate that under different recording conditions for each individual grating in each separate layer with an inhomogeneous phase front of one of the recording beams, the kinetics of formation and the spatial profile of the refractive index itself are two-dimensionally inhomogeneous.
  • Light Diffraction on Inhomogeneous Multiplexed Multilayer Holographic Structures in Photopolymerizing Compositions
    V. O. Dolgirev, S. N. Sharangovich, D. S. Rastrygin
    Russian Physics Journal, 2023
  • Studying the process of holographic formation of multilayer inhomogeneous PPM-LC diffraction structures
    V G Ivanchenko, V O Dolgirev, D S Rastrygin, S N Sharangovich
    Journal of Physics Conference Series, 2022
    The article describes a theoretical model for the formation of a multilayer diffractive holographic structure (MIHDS) based on a photopolymer composition including liquid crystals (LC). We presented mathematical modeling of spatial profiles kinetics of the refractive index of the first harmonic of MIHDS considering the photoinduced light absorption (PLA) of the non-optimized and optimized composition. Numerical modeling has shown that optimization of the composition of MIHDS at different thicknesses of the diffraction layer requires a difference in the concentration of the dye-sensitizer for subsequent layers.