Dr. Sergey N. Sharangovich Profile

Dr. Sergey N. Sharangovich

Dept Head at TUSUR

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Author

Publications (35)

Proceedings Article | 4 January 2019 Paper

Characteristics of controllable holographic DOEs in PDLC for light beams conversion into Bessel-like ones

Sergey Sharangovich, Artem Semkin

Proceedings Volume 11024, 110240X (2019) https://doi.org/10.1117/12.2520156

KEYWORDS: Diffraction, Diffractive optical elements, Refractive index, Holography, Numerical simulations, Liquid crystals, Photopolymerization, Optical vortices, Polymers, Diffusion

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Proceedings Article | 4 January 2019 Paper

Modeling of the holographic formation kinetics of diffractive optical elements for light beams conversion in PDLCs

Sergey Sharangovich, Artem Semkin

Proceedings Volume 11024, 110240U (2019) https://doi.org/10.1117/12.2316293

KEYWORDS: Diffractive optical elements, Refractive index, Holography, Diffusion, Numerical simulations, Photopolymerization, Liquid crystals, Chemical elements, Polymers

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Proceedings Article | 1 December 2017 Paper

Theoretical model of a polarization diffractive elements for the light beams conversion holographic formation in PDLCs

Sergey Sharangovich, Artem Semkin

Proceedings Volume 10603, 106030K (2017) https://doi.org/10.1117/12.2292799

KEYWORDS: Polarization, Holography, Polymers, Liquid crystals, Transition metals

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Proceedings Article | 14 December 2016 Paper

Light beams interaction with highly effective holographic diffraction structure formed in polymer-stabilized liquid crystal under the impact of arbitrarily spatially inhomogeneous electric field

Sergey Sharangovich, Artem Semkin

Proceedings Volume 10176, 101761S (2016) https://doi.org/10.1117/12.2268127

KEYWORDS: Holography, Diffraction, Polymers, Liquid crystals

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Proceedings Article | 14 December 2016 Paper

Formation and readout of holographic amplitude and phase non-uniform polarization gratings in polymer-stabilized liquid crystals

Sergey Sharangovich, Artem Semkin

Proceedings Volume 10176, 101761T (2016) https://doi.org/10.1117/12.2268154

KEYWORDS: Holography, Polarization, Polymers, Liquid crystals, Diffraction gratings, Diffraction

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Proceedings Article | 6 December 2006 Paper

Analysis of dynamics of holographic grating formation with inharmonic spatial distribution in photopolymer + liquid crystal compounds

Eugene Dovolnov, Sergey Sharangovich

Proceedings Volume 6023, 602301 (2006) https://doi.org/10.1117/12.646947

KEYWORDS: Diffusion, Polymerization, Polymers, Absorption, Liquid crystals, Refractive index, Diffraction, Holography, Diffraction gratings, Photopolymerization

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Proceedings Article | 11 May 2006 Paper

Higher-harmonics nonlinear model for dynamical holographic grating formation in absorbent photopolymers

Sergey Sharangovich, Eugene Dovolnov

Proceedings Volume 6255, 62550J (2006) https://doi.org/10.1117/12.676800

KEYWORDS: Silver, Photopolymers, Diffraction gratings, Diffraction, Diffusion, Holography, Absorption, Polymerization, Two wave mixing, Numerical simulations

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Proceedings Article | 25 April 2006 Paper

Holographic compensation of amplitude nonuniformities of photopolymer chirped gratings

Eugene Dovolnov, Sergey Sharangovich

Proceedings Volume 6187, 61871L (2006) https://doi.org/10.1117/12.673833

KEYWORDS: Refractive index, Diffusion, Absorption, Holography, Mathematical modeling, Polymers, Photopolymerization, Photopolymers, Diffraction gratings, Gaussian beams

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Proceedings Article | 8 June 2005 Paper

Analysis of kinetics of photopolymer holographic grating formation with inharmonic spatial distribution

Eugene Dovolnov, Sergey Sharangovich

Proceedings Volume 5851, (2005) https://doi.org/10.1117/12.634072

KEYWORDS: Diffusion, Polymerization, Absorption, Diffraction gratings, Diffraction, Modulation, Refractive index, Holography, Numerical simulations, Polymers

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Proceedings Article | 8 June 2005 Paper

Investigation of influence of photopolymerization processes on kinetics of transmission and reflection gratings record in absorbent photopolymer materials

Eugene Dovolnov, Sergey Sharangovich

Proceedings Volume 5851, (2005) https://doi.org/10.1117/12.634070

KEYWORDS: Diffraction, Polymerization, Diffusion, Absorption, Polymers, Photopolymerization, Diffraction gratings, Molecules, Roentgenium, Numerical simulations

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Proceedings Article | 8 June 2005 Paper

Analytical and experimental investigations of photopolymer Bragg gratings at a string pulse record

Eugene Dovolnov, Sergey Sharangovich, Eugene Pen, Vladimir Shelkovnikov

Proceedings Volume 5851, (2005) https://doi.org/10.1117/12.634043

KEYWORDS: Absorption, Diffraction gratings, Diffraction, Diffusion, Holograms, Polymerization, Signal attenuation, Refractive index, Holography, Numerical simulations

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Proceedings Article | 7 February 2005 Paper

Holographic recording of superimposed gratings by angle multiplexing in photopolymers with light-induced changing of optical absorption

Sergey Sharangovich, Vitaliy Kuznechov, Vladimir Shelkovnikov, Eugene Pen

Proceedings Volume 5636, (2005) https://doi.org/10.1117/12.577836

KEYWORDS: Diffraction, Holograms, Diffraction gratings, Absorption, Holography, Diffusion, Photopolymers, Polymers, Polymerization, Multiplexing

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Proceedings Article | 21 October 2004 Paper

Analytical solution for nonlinear dynamics of photopolymer Bragg gratings at pulse recording

Sergey Sharangovich, Eugene Dovolnov

Proceedings Volume 5581, (2004) https://doi.org/10.1117/12.582923

KEYWORDS: Diffraction gratings, Absorption, Diffraction, Diffusion, Signal attenuation, Numerical simulations, Refractive index, Polymerization, Holography, Holograms

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Proceedings Article | 24 September 2004 Paper

Analytical and experimental investigations of nonlinear dynamics of photopolymer Bragg gratings at pulse recording

Eugene Dovolnov, Sergey Sharangovich, Eugene Pen, Vladimir Shelkovnikov

Proceedings Volume 5582, (2004) https://doi.org/10.1117/12.583467

KEYWORDS: Diffraction gratings, Absorption, Diffraction, Diffusion, Holograms, Signal attenuation, Polymerization, Numerical simulations, Polymers, Holography

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Proceedings Article | 26 April 2004 Paper

Experimental determination and optimization of parameters of holographic recording in photopolymers with light-induced changing of optical absorption

Sergey Sharangovich, Eugene Dovolnov

Proceedings Volume 5464, (2004) https://doi.org/10.1117/12.548047

KEYWORDS: Diffraction, Photopolymers, Diffusion, Absorption, Diffraction gratings, Holography, Polymerization, Refractive index, Holograms, Polymers

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Proceedings Article | 26 April 2004 Paper

Models of holographic record of reflection and transmitted diffraction gratings in optical absorbent photopolymeric materials

Sergey Sharangovich, Eugene Dovolnov

Proceedings Volume 5464, (2004) https://doi.org/10.1117/12.548046

KEYWORDS: Diffraction gratings, Diffraction, Absorption, Roentgenium, Diffusion, Holography, Polymerization, Polymers, Signal attenuation, Holograms

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Proceedings Article | 3 December 2003 Paper

Research of recording processes of transmitted holographic gratings in absorbent photopolymeric materials

Sergey Sharangovich, Eugene Dovolnov

Proceedings Volume 5257, (2003) https://doi.org/10.1117/12.545838

KEYWORDS: Holograms, Absorption, Data modeling, Diffusion, Diffraction, Polymers, Refractive index, Diffraction gratings, Mathematical modeling, Holography

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Proceedings Article | 14 July 2003 Paper

Holographic recording of superimposed diffraction gratings in absorbent photopolymers

Sergey Sharangovich, Vitaliy Kuznechov

Proceedings Volume 5104, (2003) https://doi.org/10.1117/12.488531

KEYWORDS: Holograms, Diffraction, Absorption, Diffraction gratings, Holography, Diffusion, Photopolymers, Polymerization, Polymers, Multiplexing

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Proceedings Article | 14 July 2003 Paper

Record and postexpositional self-amplification of holographic grating in photopolymer films with light-induced optical attenuation

Sergey Sharangovich, Eugene Dovolnov

Proceedings Volume 5104, (2003) https://doi.org/10.1117/12.488506

KEYWORDS: Absorption, Diffraction gratings, Holograms, Diffraction, Diffusion, Holography, Signal attenuation, Polymerization, Data modeling, Polymers

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Proceedings Article | 17 June 2003 Paper

Results of experimental investigation of recording holograms in absorbent photopolymers and matching them with the analytical model

Sergey Sharangovich, Eugene Dovolnov

Proceedings Volume 5129, (2003) https://doi.org/10.1117/12.502277

KEYWORDS: Holograms, Photopolymers, Data modeling, Absorption, Polymers, Diffraction, Analytical research, Process modeling, Mathematical modeling, Organic chemistry

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Proceedings Article | 17 June 2003 Paper

Analytical model of the recording process of transparent holographic gratings in photopolymers with photoinduced absorption

Sergey Sharangovich, Eugene Dovolnov

Proceedings Volume 5129, (2003) https://doi.org/10.1117/12.502280

KEYWORDS: Absorption, Photopolymers, Polymers, Diffusion, Holograms, Mathematical modeling, Diffraction, Holography, Diffraction gratings, Photopolymerization

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Proceedings Article | 8 August 2001 Paper

Experimental research of process of a record of the holograms in photopolymers

Eugene Kovalenko, Sergey Sharangovich, Valeri Sysuev, Evgeny Dovolnov

Proceedings Volume 4513, (2001) https://doi.org/10.1117/12.435876

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Proceedings Article | 22 June 1999 Paper

Dynamics of nonlinear process of record and readout of 3D holograms in photopolymer medium

Eugene Kovalenko, Sergey Sharangovich, Valeri Sysuev

Proceedings Volume 3516, (1999) https://doi.org/10.1117/12.350526

KEYWORDS: Holograms, Gaussian beams, Holography, Optical fibers, Polymerization, Mathematical modeling, Diffraction, Polymers, Diffraction gratings, Photorefractive polymers

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Proceedings Article | 25 August 1998 Paper

Nonstationary diffraction on slant holographic gratings in polymer films

Eugene Kovalenko, Sergey Sharangovich

Proceedings Volume 3388, (1998) https://doi.org/10.1117/12.319428

KEYWORDS: Diffraction gratings, Holography, Diffusion, Diffraction, Thulium, Polymers, Holograms, Photopolymerization, Refractive index, Photopolymers

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Proceedings Article | 25 August 1998 Paper

Dynamics of hologram pulse recording in polymer films with high optical attenuation

Eugene Kovalenko, Sergey Sharangovich, Vladimir Shelkovnikov, Alexander Plekhanov, Eugene Pen

Proceedings Volume 3388, (1998) https://doi.org/10.1117/12.319429

KEYWORDS: Holography, Diffusion, Holograms, Polymers, Polymerization, Signal attenuation, Diffraction gratings, Photopolymers, Pulsed laser operation, Helium neon lasers

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Proceedings Article | 1 January 1998 Paper

Dynamics of holographic diffraction grating formation in pilot photopolymer materials during pulse recording

Vladimir Shelkovnikov, Alexander Plekhanov, Eugene Pen, Sergey Sharangovich

Proceedings Volume 3347, (1998) https://doi.org/10.1117/12.301425

KEYWORDS: Polymers, Polymerization, Holograms, Diffraction gratings, Pulsed laser operation, Holography, Photopolymers, Helium neon lasers, Magnesium, Dysprosium

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The investigations of hologram recording on a basis of photochemical polymerization reaction in polymer films have lead to creation the number of new holographic materials13. It is expected that their application will be realized in the nearest future. The performances of holographic recording useful for practice, such as sensitivity, maximum of diffraction efficiency (DE), storage, spatial resolution and other have been investigated in detail for this films4'5. But the question of mechanism of hologram formation, including the description of kinetic of photochemical and chemical stages of hologram recording is keeping open and discussed5'6. The holographic performances of HPPM-633 which consist of the light absorbing dye (Methylene Blue), initiator (triethanolamine - TEA), monomer (acrylamide -M), cross-linking monomer (hexamethylenbisacrylamide) and polymer binder (polyvinylalcohol) at He-Ne laser continuous recording were described7'8. In the preliminary investigation of hologram recording in HPPM-633 by the He-Ne laser pulses it was established that the DE about 1-5% appear at exposition time 0, 1 s with laser beam power density 0,05-0,1 W/cm2. The Fig. 1 illustrates the pulse hologram growth curves in HPPM633 , The phenomenon of hologram dark amplification (see Fig.2a,b) was observed in this experiment , That fact is in accordance with the mechanism of free-radical polymerization in HPPM. In this case the monomer polymerization in plasticizered polymer may expand independently after initial laser pulse action. It is interesting to know in which way the polymerization accrues at earlier stages. But the employment of pulse setup on the base of He-Ne laser does not allow to investigate the dark processes at time less then 0. 1 sec. To elucidate the material behaviour at the initial stages of the polymerization process immediately after excitation of the absorbing dye to the triplet state it is necessary to record the diffraction grating by laser pulse with durability about 108 sec. The DE growth of hologram under these conditions fall into nonsteady-state case of the polymerization. Thus we must to connect the hologram DE temporal dependence (DE(t)) with kinetic model of polymerization reactions in nonsteady-state case to have a possibility of the chemical interpretation of the obtained experimental date.

Proceedings Article | 27 December 1996 Paper

Dynamics of hologram recording in photopolymer materials

Eugene Kovalenko, Sergey Sharangovich, Tatyana Zelenskaya

Proceedings Volume 2969, (1996) https://doi.org/10.1117/12.262671

KEYWORDS: Diffusion, Polymerization, Polymers, Diffraction, Photopolymers, Holograms, Holography, Diffraction gratings, Molecules, Tin

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Proceedings Article | 27 December 1996 Paper

Dynamic theory of hologram optical amplification in photopolymer materials

Eugene Kovalenko, Sergey Sharangovich

Proceedings Volume 2969, (1996) https://doi.org/10.1117/12.262591

KEYWORDS: Diffusion, Holograms, Photopolymers, Holography, Polymerization, Refractive index, Thulium, Diffraction gratings, Photopolymerization, Diffraction

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Proceedings Article | 30 September 1996 Paper

Dynamic model of hologram recording in photopolymer materials

Eugene Kovalenko, Sergey Sharangovich, Tatyana Zelenskaya

Proceedings Volume 2851, (1996) https://doi.org/10.1117/12.251826

KEYWORDS: Diffusion, Polymerization, Holograms, Polymers, Photopolymers, Holography, Molecules, Mathematical modeling, Molecular interactions, Refractive index

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Proceedings Article | 30 September 1996 Paper

Dynamic reconstruction of holograms in photopolymer materials

Eugene Kovalenko, Sergey Sharangovich

Proceedings Volume 2851, (1996) https://doi.org/10.1117/12.251828

KEYWORDS: Diffusion, Holograms, Photopolymers, Holography, Thulium, Polymerization, Photopolymerization, Holographic materials, Polymers, Diffraction gratings

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Proceedings Article | 12 June 1996 Paper

Polarized and frequency-angle sensitivity of amplified holograms under multiwave mixing in photorefractive optically active crystals

Eugene Kovalenko, Sergey Sharangovich

Proceedings Volume 2754, (1996) https://doi.org/10.1117/12.243131

KEYWORDS: Crystals, Crystal optics, Holography, Polarization, Diffraction gratings, Holograms, Active optics, Erbium, Birefringence, Diffraction

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Proceedings Article | 12 June 1996 Paper

Peculiarities of acousto-optic filtration of light imaging in 3D nonuniform crystals

Sergey Sharangovich

Proceedings Volume 2754, (1996) https://doi.org/10.1117/12.243121

KEYWORDS: Crystals, 3D modeling, Adaptive optics, 3D image processing, Crystal optics, Acousto-optics, Laser crystals, Near field optics, Stereoscopy, Geometrical optics

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Proceedings Article | 7 December 1994 Paper

Modeling of acousto-optic components on nonuniform crystals

Sergey Sharangovich

Proceedings Volume 2429, (1994) https://doi.org/10.1117/12.195559

KEYWORDS: Acousto-optics, Crystals, 3D modeling, Adaptive optics, Diffraction, Laser crystals, Crystal optics, Polarization, Optical storage, Acoustics

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Proceedings Article | 24 August 1992 Paper

Acousto-optic interaction of complex fields in crystals and its application to optical information processing

V. Efanov, Anatoly Zadorin, Eugene Kovalenko, Sergey Sharangovich

Proceedings Volume 1704, (1992) https://doi.org/10.1117/12.139910

KEYWORDS: Diffraction, Crystals, Acousto-optics, Electroluminescent displays, Waveguides, Acoustics, Modulation, Optical signal processing, Modulators, Laser crystals

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Proceedings Article | 1 September 1991 Paper

Development of wideband 16-channel acousto-optical modulators on the LiNbO3 and TeO2 crystals

Lev Bokov, Anatoly Demidov, Anatoly Zadorin, Igor Kushnarev, Leonid Serebrennicov, Sergey Sharangovich

Proceedings Volume 1505, (1991) https://doi.org/10.1117/12.47023

KEYWORDS: Modulators, Crystals, Acoustics, Acousto-optics, Diffraction, Computing systems, Computer architecture, Anisotropy, Laser crystals, Adaptive optics

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The modern tendenci es i n the techni ques of acoustoopti c ( AO) data proceasing stinulate the technology development of the rnultichannel AO devices eleroental base, in the first turn nultichannel Bragg modulators' ' Z The demands made to them in the composition of the high-production signal and algebraic processors can be deVided into two groups. The demands of the large working band and the modulators high diffraction efficienty can be attributed to the first one. The realization of high indices on these parameters is based in the main on the technique achievements of the one channel AO modulators , progress i n worki ng out of whi ch i s defi ned by the successes in synthesizing of the new high effective AO materials, or achivernents in looking for the high effective cut-offs of the known crystals. The given criterion can be indicated by the value of AO quality coefficient M of the material for isotropic or anisotropic wide-band diffraction. Such important parameters as the admissible level of the interchannel coupling, the identity degree of the amplitude and phase-frequency channel characteri sti cs , quantity and densi ty of channel arrangement on the crystal can be attributed to the second group. The complex of these requl rements causes the more hard cri ten a i n selecting the material of the modulator sound wire and the AOl geometry, adding them by the physical parameters, playing the secondary role for one-channel modulators. To those in particular there have been attn buted the coeffi ci ents of the quadrati c acousti c ani sotropy showing the relative increasing or decreasing of the beam ( energetic) sound di vergence on compari son wi th the di ffracti on one. The value of these coefficients can greatly influence on the density of channel arangeroent in some cases. For example in widely used in acoustooptic mnodulators on TeO for slow shi fted waves near di recti on (11 0) the acoustic beam divergence forces in 50 times on comparison with the diffraction one. This circumstance limits essentially the use of the gi yen cut-off s TeO for building of the multichannel AO processor. In the given work we examine the main physical and technological aspects in the domain of development of wide-band multichannel microwave AO modulators of two different types: 1 - modulators on the crys— tal LiNJ on the base anisotropic AO interaction in YZ plane and the excitation of the acoustic waves on the crystal surface by the slotted transducer; 2 - isotropic modulators on the crystal TeO i-cut-ting with piezotransducer on the crystal LiNbO plates. The technology of the modulators with the surface excitation of the acoustic waves is more simple than the technology of the modulators with the plate or film transducer, but demands optimization of the interaction geometry with the joint calculation acoustooptical and piezoelectrical properties. the base of expression taking into account optical , acoustic and piezoelectrical anizotropy of the crystals by the numerical methods there have been analyzed the angular dependences of the AO quality coefficient M for isotropic and anisotropic geometries AO interaction in the crystal LiNW . There have been determined that the absolute maximum of the value M is achieved for the wide-band anisotropic light diffraction on the slow shifted waves of the IZ crystal plane. In the maximum M region the slow shifted waves possess the cross piezoactivity, moreover the coefficient of the electromechanical coupling L. for the given type of piezoactivity also reaches the absolute maxinum, that gives the possibility sufficiently effectively excite these waves on the crystal plane and develop simple from the technological point of view one channel and multi channel anisotropic microwave AO modulators. The analysis of the acoustooptical and acoustic anisotropy of the crystal TeO allows us to suppose that the most acceptable geometry of the AC interaction for building rnultichannel Bragg modulators correspond to the isotropic light diffraction on the longitudinal waves i n the di recti on ( 001 ) . This geometry is characteri zed by the peak anisotropy M relatively the acoustic wave deviation from the direction (001) in the sector 100 and by the small values of the quadratic acoustic anisotropy coefficients W.

Showing 5 of 35 publications

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