Dr. Alexei A. Kamshilin Profile

Dr. Alexei A. Kamshilin

Professor at ITMO Univ

SPIE Involvement:

Author

Publications (45)

Proceedings Article | 4 January 2019 Paper

Study of thermal relaxation processes in life tissues by blood pulsation imaging technique

Anjelika Belaventseva, Roman Romashko, Yuri Kulchin, Lyudmila Lyakhova, Alexei Kamshilin, Oleg Mamontov

Proceedings Volume 11024, 110240F (2019) https://doi.org/10.1117/12.2316295

KEYWORDS: Tissues, Blood, Skin, Glasses, Temperature metrology, Blood circulation, Imaging systems, Video, Laser speckle contrast imaging, Photoplethysmography

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Proceedings Article | 28 July 2017 Paper

Analysis of light intensity modulation by red blood cells motion in capillaries

Mikhail Volkov, Andrey Potemkin, Nikita Margaryants, Maxim Volynsky, Igor Gurov, Alexei Kamshilin

Proceedings Volume 10412, 104120O (2017) https://doi.org/10.1117/12.2284798

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SPIE Journal Paper | 11 April 2014 Open Access

Fast vascular component of cortical spreading depression revealed in rats by blood pulsation imaging

Victor Teplov, Artem Shatillo, Ervin Nippolainen, Olli Gröhn, Rashid Giniatullin, Alexei Kamshilin

JBO, Vol. 19, Issue 04, 046011, (April 2014) https://doi.org/10.1117/12.10.1117/1.JBO.19.4.046011

KEYWORDS: Blood, Wave propagation, Imaging systems, Cameras, Video, Electrodes, Visualization, Brain, Modulation, Signal to noise ratio

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Proceedings Article | 11 September 2012 Paper

Light penetration depth of a turbid media estimated by cross-correlation of speckle patterns

Igor Sidorov, Serguei Miridonov, Ervin Nippolainen, Alexei Kamshilin

Proceedings Volume 8413, 84130B (2012) https://doi.org/10.1117/12.978218

KEYWORDS: Laser phosphor displays, Speckle pattern, Holograms, Light scattering, Diffraction, Volume holography, Scattering, Correlation function, Refractive index, Optical properties

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Proceedings Article | 11 September 2012 Paper

Detection of surface defects by means of dynamic speckles

Ervin Nippolainen, Igor Sidorov, Alexei Kamshilin

Proceedings Volume 8413, 841313 (2012) https://doi.org/10.1117/12.976294

KEYWORDS: Defect detection, Spatial filters, Photodiodes, Modulation, Speckle pattern, Optical filters, Inspection, Wavefronts, Speckle, Light scattering

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SPIE Journal Paper | 4 May 2012

Accuracy of the reflectance spectrum recovery in a light-emitting diode-based multispectral imaging system

Laure Fauch, Ervin Nippolainen, Alexei Kamshilin

OE, Vol. 51, Issue 5, 053201, (May 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.5.053201

KEYWORDS: Reflectivity, Light emitting diodes, Multispectral imaging, Imaging systems, Error analysis, Calibration, Cameras, Optical fibers, Digital cameras, Reflection

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Proceedings Article | 17 May 2010 Paper

Novel optoelectronic system for fast acquisition of reflection spectra

V. Teplov, L. Fauch, R. Saarenheimo, E. Nippolainen, A. Kamshilin

Proceedings Volume 7469, 74690S (2010) https://doi.org/10.1117/12.866772

KEYWORDS: Reflection, Light emitting diodes, CCD cameras, Light sources, Optoelectronics, Optical fibers, Switching, Cameras, Spatial resolution, Reflectivity

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Proceedings Article | 5 June 2008 Paper

Dynamic-speckle profilometer for online measurements of coating thickness

Alexei Kamshilin, Dmitry Semenov, Ervin Nippolainen, Serguei Miridonov

Proceedings Volume 7022, 70220Q (2008) https://doi.org/10.1117/12.803943

KEYWORDS: Spatial filters, Speckle, Sensors, Speckle pattern, Photodiodes, Coating, Optical filters, Modulation, Image filtering, Profilometers

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Proceedings Article | 5 June 2008 Paper

Optical orientation of dipolar centers in Bi12SiO20 crystal grown in an oxygen-free atmosphere

Alexander Grachev, Ervin Nippolainen, Alexei Kamshilin

Proceedings Volume 7022, 70220B (2008) https://doi.org/10.1117/12.803914

KEYWORDS: Crystals, Polarization, Modulation, Dichroic materials, Atmospheric optics, Absorption, Laser beam diagnostics, Argon, Laser crystals, Optical amplifiers

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Proceedings Article | 1 August 2007 Paper

Fast adaptive interferometer based on CdTe crystal and low power radiation

Roman Romashko, Yuriy Kulchin, Salvatore Di Giloramo, Ervin Nippolainen, Jean Claude Launay, Alexei Kamshilin

Proceedings Volume 6785, 678512 (2007) https://doi.org/10.1117/12.757865

KEYWORDS: Crystals, Holograms, Modulation, Interferometers, Polarization, Phase shift keying, Fiber optics, Phase modulation, Laser crystals, Holographic interferometry

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Proceedings Article | 15 September 2006 Paper

Fast distance measurements based on dynamic speckles induced by acousto-optic scanning

Ervin Nippolainen, Dmitry Semenov, Alexei Kamshilin, Andrei Belyaev, Sergei Andreev, Boris Gurevich

Proceedings Volume 6341, 634128 (2006) https://doi.org/10.1117/12.695494

KEYWORDS: Modulation, Sensors, Spatial filters, Speckle pattern, Distance measurement, Photodiodes, Surface plasmons, Speckle, Crystals, Acoustics

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Proceedings Article | 9 June 2006 Paper

Computer acquisition of 3D images utilizing dynamic speckles

Alexei Kamshilin, Dmitry Semenov, Ervin Nippolainen, Erik Raita

Proceedings Volume 6252, 62521E (2006) https://doi.org/10.1117/12.677058

KEYWORDS: Speckle pattern, Modulation, Spatial filters, Photodiodes, Acoustics, Light scattering, Distance measurement, Mirrors, 3D acquisition, 3D metrology

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Proceedings Article | 9 June 2006 Paper

Surface profile acquisition using dynamic speckles

Dmitry Semenov, Ervin Nippolainen, Erik Raita, Alexei Kamshilin

Proceedings Volume 6162, 61620B (2006) https://doi.org/10.1117/12.674973

KEYWORDS: Spatial filters, Modulation, Speckle pattern, Signal to noise ratio, Optical filters, Speckle, Photodiodes, Light scattering, Ronchi rulings, Profilometers

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Proceedings Article | 20 January 2006 Paper

Detecting small phase modulation using photorefractive reflection hologram

Roman Romashko, Yuri Kulchin, Alexei Kamshilin

Proceedings Volume 6027, 602727 (2006) https://doi.org/10.1117/12.668199

KEYWORDS: Crystals, Modulation, Polarization, Phase shift keying, Holograms, Demodulation, Phase modulation, Diffusion, Diffraction, Reflection

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Proceedings Article | 13 June 2005 Paper

Fast distance sensing by use of the speckle effect

Ervin Nippolainen, Dmitry Semenov, Alexei Kamshilin, Andrey Belyaev, Sergei Andreev, Boris Gurevich

Proceedings Volume 5856, (2005) https://doi.org/10.1117/12.612576

KEYWORDS: Speckle pattern, Sensors, Photodiodes, Surface plasmons, Modulation, Optical filters, Crystals, Speckle, Light scattering, Computing systems

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Proceedings Article | 19 November 2003 Paper

Highly-sensitive adaptive interferometer for ultrasound detection

Alexei Kamshilin, Erik Raita, A. Grachev

Proceedings Volume 4829, (2003) https://doi.org/10.1117/12.524869

KEYWORDS: Crystals, Interferometers, Polarization, Ultrasonography, Laser crystals, Demodulation, Holograms, Physics, Homodyne detection, Wavefronts

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Proceedings Article | 20 September 2002 Paper

Adaptive photorefractive interferometers for ultrasound detection

Alexei Kamshilin

Proceedings Volume 4919, (2002) https://doi.org/10.1117/12.465722

KEYWORDS: Crystals, Interferometers, Laser crystals, Polarization, Modulation, Demodulation, Dielectric polarization, Phase shift keying, Signal to noise ratio, Holograms

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Proceedings Article | 8 August 2001 Paper

Polarization self-modulation effect in photoconductive electro-optic crystals

Alexei Kamshilin

Proceedings Volume 4513, (2001) https://doi.org/10.1117/12.435893

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Proceedings Article | 10 April 2001 Paper

Fast photorefractive response in BSO in the near infrared

Erik Raita, Oleg Kobozev, Ervin Nippolainen, Alexei Kamshilin, Victor Prokofiev

Proceedings Volume 4415, (2001) https://doi.org/10.1117/12.425492

KEYWORDS: Crystals, Modulation, Polarization, Near infrared, Oxygen, Infrared radiation, Dielectric polarization, Speckle, Speckle pattern, Photorefraction

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Proceedings Article | 15 March 2001 Paper

Adaptive interferometry using polarization self-modulation in photorefractive crystals

Alexei Kamshilin

Proceedings Volume 4358, (2001) https://doi.org/10.1117/12.418846

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Proceedings Article | 15 March 2001 Paper

Origin of transient effects in two-wave mixing experiments in BSO crystals

A. Grachev, Alexei Kamshilin, O. Kobozev, Victor Prokofiev

Proceedings Volume 4358, (2001) https://doi.org/10.1117/12.418840

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Proceedings Article | 15 March 2001 Paper

Evolution of photorefractive gratings in sillenite crystals in conditions of induced extrinsic photoconductivity

A. Grachev, Alexei Kamshilin, Pavel Karavaev, Victor Prokofiev

Proceedings Volume 4358, (2001) https://doi.org/10.1117/12.418868

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Proceedings Article | 8 March 2001 Paper

Self-induced electro-optic modulator: a new approach for homodyne detection of ultrasonic surface displacement

Alexei Kamshilin, Kimmo Paivasaari, Nadezhda Nazhestkina

Proceedings Volume 4318, (2001) https://doi.org/10.1117/12.417619

KEYWORDS: Homodyne detection, Crystals, Electrooptic modulators, Ultrasonics, Interferometers, Interferometry, Polarization, Electro optics, Ultrasonography, Two wave mixing

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Proceedings Article | 22 May 2000 Paper

Adaptive sensors of rough-surface ultrasonic vibrations based on the polarization self-modulation effect

Kimmo Paivasaari, Alexei Kamshilin

Proceedings Volume 4072, (2000) https://doi.org/10.1117/12.386727

KEYWORDS: Crystals, Polarization, Modulation, Wavefronts, Laser crystals, Interferometers, Ultrasonics, Signal to noise ratio, Phase shifts, Speckle

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Proceedings Article | 29 December 1999 Paper

Photorefractive crystals for efficient linear sensing of speckle-pattern displacements

Erik Raita, Alexei Kamshilin, Kimmo Paivasaari, Victor Prokofiev, Timo Jaeaeskelaeinen

Proceedings Volume 4016, (1999) https://doi.org/10.1117/12.373634

KEYWORDS: Crystals, Modulation, Speckle pattern, Speckle, Polarization, Interferometry, Light scattering, Oscilloscopes, Photodiodes, Chlorine

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Proceedings Article | 18 November 1999 Paper

Elastic contributions to electro-optics

Klaus Ringhofer, Ekaterina Shamonina, Vladimir Kamenov, Alexei Kamshilin, Boris Sturman

Proceedings Volume 3904, (1999) https://doi.org/10.1117/12.370398

KEYWORDS: Electro optics, Crystals, Holograms, Polarization, Optical activity, Scattering, Dielectrics, Light scattering, Ions, Two wave mixing

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Proceedings Article | 19 July 1999 Paper

Photorefractive effects in long narrow BSO-crystals with applied electric field

Gregor Cedilnik, Matthias Esselbach, Armin Kiessling, Richard Kowarschik, Ervin Nippolainen, Alexei Kamshilin, Victor Prokofiev

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.354867

KEYWORDS: Crystals, Photorefraction, Diffraction gratings, Picosecond phenomena, Holograms, Electron transport, Absorption, Polonium, Particle swarm optimization, Spatial frequencies

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Proceedings Article | 28 December 1998 Paper

Adaptive correlation filtering of time-varying speckle pattern using photorefractive fanning effect

Erik Raita, Alexei Kamshilin, Kimmo Paivasaari, Yuri Kulchin, Timo Jaeaeskelaeinen

Proceedings Volume 3684, (1998) https://doi.org/10.1117/12.334842

KEYWORDS: Crystals, Speckle pattern, Modulation, Image filtering, Light scattering, Speckle, Digital filtering, Scattering, Laser crystals, Phase shift keying

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Proceedings Article | 22 September 1997 Paper

Laser diode heterodyne interferometry in two-wave mixing with photorefractive Bi12TiO20 fiberlike crystal

Yukihiro Ishii, Ribun Onodera, Alexei Kamshilin, Timo Jaeaeskelaeinen

Proceedings Volume 3137, (1997) https://doi.org/10.1117/12.287779

KEYWORDS: Crystals, Laser crystals, Two wave mixing, Heterodyning, Interferometry, Mirrors, Semiconductor lasers, Interferometers, Laser optics, Motion measurement

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Proceedings Article | 14 July 1997 Paper

Progress in the synthesis of photorefractive sillenite structure materials

Victor Prokofiev, Alexei Kamshilin, Timo Jaeaeskelaeinen

Proceedings Volume 3178, (1997) https://doi.org/10.1117/12.280714

KEYWORDS: Crystals, Optical fibers, Crystallography, Thin films, Mirrors, Optical components, Carbon dioxide lasers, Oxides, Crystal optics, Chemical elements

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Proceedings Article | 4 February 1997 Paper

Acceleration of a photorefractive response in Bi12TiO20 crystals

Erik Raita, Alexei Kamshilin

Proceedings Volume 2967, (1997) https://doi.org/10.1117/12.266539

KEYWORDS: Crystals, Nonlinear crystals, Laser crystals, Waveguides, Reflection, Polarization, Photorefraction, Silicon, Numerical simulations, Two wave mixing

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Proceedings Article | 31 December 1996 Paper

Nonlinear optical effects and phase conjugation in photorefractive fibers

Alexei Kamshilin

Proceedings Volume 2866, (1996) https://doi.org/10.1117/12.263023

KEYWORDS: Crystals, Laser crystals, Optical fibers, Phase conjugation, Reflection, Light scattering, Sensors, Two wave mixing, Interferometry, Signal to noise ratio

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Proceedings Article | 27 December 1996 Paper

Laser beam self-channeling in photorefractive waveguides

Erik Raita, Alexei Kamshilin, A. Khomenko

Proceedings Volume 2969, (1996) https://doi.org/10.1117/12.262598

KEYWORDS: Crystals, Laser crystals, Waveguides, Light scattering, Reflection, Optical activity, Numerical simulations, Beam propagation method, Polarization, Dielectric polarization

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Proceedings Article | 27 December 1996 Paper

Optical suppression of a double-phase conjugation in a photorefractive Bi12TiO20 waveguide

Erik Raita, Alexei Kamshilin, Raimo Silvennoinen, Timo Jaeaeskelaeinen

Proceedings Volume 2969, (1996) https://doi.org/10.1117/12.262650

KEYWORDS: Crystals, Phase conjugation, Waveguides, Polarization, Laser crystals, Mirrors, Dielectric polarization, Helium neon lasers, Electro optics, Holograms

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Proceedings Article | 1 September 1996 Paper

Optical sensing with photorefractive double phase conjugate mirror

Alexei Kamshilin

Proceedings Volume 2778, 2778FL (1996) https://doi.org/10.1117/12.2316250

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Proceedings Article | 1 September 1996 Paper

Laser beam self-channeling in a photorefractive waveguide

Alexei Kamshilin

Proceedings Volume 2778, 2778AR (1996) https://doi.org/10.1117/12.2316076

KEYWORDS: Waveguides, Crystals, Laser crystals, Electro optical modeling, Reflection, Nonlinear crystals, Holograms, Planar waveguides, Spatial solitons, Diffusion

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Proceedings Article | 11 April 1996 Paper

Phase conjugation in photorefractive fibers

Alexei Kamshilin, Erik Raita, Victor Prokofiev, Timo Jaeaeskelaeinen

Proceedings Volume 2771, (1996) https://doi.org/10.1117/12.238063

KEYWORDS: Optical fibers, Crystals, Phase conjugation, Light scattering, Laser scattering, Scattering, Spatial frequencies, Laser crystals, Nonlinear crystals, Two wave mixing

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Proceedings Article | 5 February 1996 Paper

Photorefractive double-phase conjugator for multimode fiber optic interferometer

A. Khomenko, A. Garcia-Weidner, Alexei Kamshilin

Proceedings Volume 2730, (1996) https://doi.org/10.1117/12.231090

KEYWORDS: Crystals, Interferometers, Multimode fibers, Fiber optics, Phase conjugation, Sensors, Phase shifts, Laser crystals, Phase modulation, Fiber optics sensors

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SPIE Journal Paper | 1 September 1995

Two-wave mixing and fanning effect in Bi₁₂TiO₂₀ under an alternating electric field

Hemmo Tuovinen, Alexei Kamshilin, Risto Ravattinen, Victor Prokofiev, Timo Jaeaeskelaeinen

OE, Vol. 34, Issue 09, (September 1995) https://doi.org/10.1117/12.10.1117/12.208096

KEYWORDS: Crystals, Laser crystals, Polarization, Holograms, Two wave mixing, Holography, Crystal optics, Light scattering, Phase conjugation, Active optics

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Proceedings Article | 1 March 1994 Paper

Low-noise holographic interferometer using photorefractive crystals

Serguei Miridonov, Alexei Kamshilin, Diana Tentori-Santa-Cruz

Proceedings Volume 2004, (1994) https://doi.org/10.1117/12.172598

KEYWORDS: Signal to noise ratio, Crystals, Holographic interferometers, Holograms, 3D image reconstruction, Laser crystals, Light scattering, Scattering, Holography, Wavefronts

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Proceedings Article | 21 January 1994 Paper

Single-crystal photorefractive fibers for optical processing

Alexei Kamshilin, Raimo Silvennoinen, Timo Jaeaeskelaeinen, Victor Prokofiev

Proceedings Volume 2051, (1994) https://doi.org/10.1117/12.165972

KEYWORDS: Optical fibers, Crystals, Phase conjugation, Laser crystals, Reflectivity, Holograms, Optical signal processing, Spatial frequencies, Holography, Helium neon lasers

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Proceedings Article | 26 July 1993 Paper

Simultaneous absorption and phase gratings recording in photorefractive Bi12TiO20 crystals

Alexei Kamshilin

Proceedings Volume 1983, 19836S (1993) https://doi.org/10.1117/12.2308663

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Proceedings Article | 1 April 1992 Paper

Two-wave mixing influence on holographic readout in photorefractive crystals

Alexei Kamshilin, Paulo Garcia

Proceedings Volume 1626, (1992) https://doi.org/10.1117/12.58077

KEYWORDS: Polarization, Crystals, Holograms, Diffraction gratings, Absorption, Diffraction, Laser crystals, Two wave mixing, Holography, Nonlinear crystals

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Proceedings Article | 1 January 1991 Paper

Optical testing by dynamic holographic interferometry with photorefractive crystals and computer image processing

Ionel Vlad, Dragos Popa, M. Petrov, Alexei Kamshilin

Proceedings Volume 1332, (1991) https://doi.org/10.1117/12.51074

KEYWORDS: Crystals, Holograms, Optical testing, Laser crystals, Image processing, Holography, Fringe analysis, Holographic interferometry, Holographic interferometers, Optical inspection

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Proceedings Article | 1 July 1990 Paper

Dynamic holographic interferometry using photorefractive crystals and computer image processing

Mikhail Petrov, Ionel Vlad, Alexei Kamshilin, Dragos Popa

Proceedings Volume 1319, (1990) https://doi.org/10.1117/12.22194

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Showing 5 of 45 publications

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