Dr. Tatyana Yu Cherezova Profile

Dr. Tatyana Yu Cherezova

Manager of Medical Group at Active Optics NightN Ltd

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Author

Publications (40)

Proceedings Article | 26 August 2008 Paper

Beam control by means of phase elements iterative control algorithms

Inna Ilyina, Alexey Mikryukov, Tatyana Yu. Cherezova

Proceedings Volume 7093, 709309 (2008) https://doi.org/10.1117/12.798753

KEYWORDS: Beam shaping, Reconstruction algorithms, Mirrors, Electrodes, Laser optics, Monochromatic aberrations, Beam controllers, Liquid crystals, Modulators, Laser stabilization

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Proceedings Article | 26 August 2008 Paper

Nonconventional wavefront sensing: point sourced SLODAR, theory and practical examples

Sergey Galetskiy, Tatiana Yu. Cherezova, Alexis Kudryashov

Proceedings Volume 7093, 70930E (2008) https://doi.org/10.1117/12.797970

KEYWORDS: Light sources, Distance measurement, Correlation function, Optical components, Wavefront sensors, Sensors, Algorithms, Turbulence, Wavefronts, Solids

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Proceedings Article | 20 February 2008 Paper

Femtosecond laser beam improvement: correction of parabolic mirror aberrations by means of adaptive optics

J. Sheldakova, A. Kudryashov, T. Cherezova

Proceedings Volume 6872, 687203 (2008) https://doi.org/10.1117/12.774089

KEYWORDS: Mirrors, Wavefront sensors, Phase conjugation, Electrodes, Monochromatic aberrations, Sensors, Femtosecond phenomena, Adaptive optics, Off axis mirrors, Wavefronts

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Proceedings Article | 12 February 2008 Paper

Adaptive optics in ophthalmology: human eye wavefront generator

Sergey Galetskiy, Tatyana Cherezova, Alexis Kudryashov

Proceedings Volume 6849, 684909 (2008) https://doi.org/10.1117/12.764582

KEYWORDS: Eye, Wavefronts, Eye models, Mirrors, Deformable mirrors, Wavefront sensors, Electrodes, Modulation transfer functions, Adaptive optics, Ophthalmology

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Proceedings Article | 8 February 2008 Paper

Methods of isoplanatic patch widening in human eye retina imaging

Alexander Dubinin, Tatyana Cherezova, Alexis Kudryashov

Proceedings Volume 6844, 684406 (2008) https://doi.org/10.1117/12.764924

KEYWORDS: Eye, Eye models, Cornea, Wavefronts, Retina, Adaptive optics, Refraction, Retinal scanning, Wavefront sensors, Monochromatic aberrations

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Proceedings Article | 26 October 2007 Paper

Adaptive optics in ophthalmology: current techniques and new methods of increasing field-of-view of fundus cameras

Alexander Dubinin, Tatyana Cherezova, Alexis Kudryashov, Fedor Starikov

Proceedings Volume 6796, 679604 (2007) https://doi.org/10.1117/12.778518

KEYWORDS: Eye, Eye models, Wavefronts, Cornea, Cameras, Retina, Adaptive optics, Wavefront sensors, Monochromatic aberrations, Ophthalmology

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Proceedings Article | 26 April 2007 Paper

The influence of human eye aberrations on the resolution and field of view of fundus-cameras

Alexander Dubinin, Tatyana Cherezova, Alexey Belyakov, Alexis Kudryashov

Proceedings Volume 6535, 653506 (2007) https://doi.org/10.1117/12.740606

KEYWORDS: Eye, Eye models, Cornea, Image quality, Wavefronts, Retina, Adaptive optics, Liquids, Optical components, Refraction

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Proceedings Article | 26 April 2007 Paper

Bimorph flexible mirror for vortex beam formation

Alexander Sobolev, Tatyana Cherezova, Vadim Samarkin, Alexey Kudryashov

Proceedings Volume 6346, 63462A (2007) https://doi.org/10.1117/12.738911

KEYWORDS: Mirrors, Electrodes, Algorithm development, Solids, Chemical elements, Wavefronts, Manufacturing, Eye, Atmospheric optics, Phase shift keying

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Proceedings Article | 26 April 2007 Paper

Intracavity genetic algorithm for any distance beam parameters control

Andrey Kostylev, Alexander Sobolev, Tatiana Cherezova, Yulia Sheldakova, Alexis Kudryashov

Proceedings Volume 6346, 63461X (2007) https://doi.org/10.1117/12.738862

KEYWORDS: Mirrors, Genetic algorithms, Electrodes, Resonators, Beam controllers, Near field, Transmission electron microscopy, Telescopes, Gaussian beams, Beam shaping

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Proceedings Article | 14 February 2007 Paper

Beam quality measurements with Shack-Hartmann wavefront sensor and M2-sensor: comparison of two methods

J. Sheldakova, A. Kudryashov, V. Zavalova, T. Cherezova

Proceedings Volume 6452, 645207 (2007) https://doi.org/10.1117/12.720045

KEYWORDS: Wavefront sensors, Wavefronts, Sensors, Beam analyzers, Beam quality measurement, Optical testing, Laser beam propagation, Charge-coupled devices, Laser applications, Near field

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Proceedings Article | 14 February 2007 Paper

Novel development of tiny bimorph mirrors

Alexis Kudryashov, Alexander Sobolev, Vadim Samarkin, Tatiana Cherezova

Proceedings Volume 6467, 64670O (2007) https://doi.org/10.1117/12.710631

KEYWORDS: Mirrors, Electrodes, Monochromatic aberrations, Wavefronts, Manufacturing, Computer simulations, Spiral phase plates, Finite element methods, Prisms, Visualization

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Proceedings Article | 14 February 2007 Paper

Far field laser intensity distribution formation by means of intracavity adaptive optics

Inna Ilyina, Tatyana Yu. Cherezova, Alexis Kudryashov

Proceedings Volume 6452, 64520C (2007) https://doi.org/10.1117/12.720042

KEYWORDS: Mirrors, Genetic algorithms, Electrodes, Deformable mirrors, Reconstruction algorithms, Adaptive optics, Beam shaping, Resonators, Fourier transforms, Laser applications

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Proceedings Article | 8 June 2006 Paper

Custom-oriented wavefront sensor for human eye properties measurements

Sergey Galetskiy, Renat Letfullin, Alex Dubinin, Tatyana Cherezova, Alexey Belyakov, Alexis Kudryashov

Proceedings Volume 6018, 601806 (2006) https://doi.org/10.1117/12.669243

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Proceedings Article | 7 March 2006 Paper

Human eye anisoplanatism: eye as a lamellar structure

Alexander Dubinin, Tatyana Cherezova, Alexey Belyakov, Alexis Kudryashov

Proceedings Volume 6138, 613813 (2006) https://doi.org/10.1117/12.650103

KEYWORDS: Eye, Eye models, Wavefronts, Retina, Adaptive optics, Monochromatic aberrations, Image resolution, Cameras, Wavefront sensors, Cornea

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Proceedings Article | 3 February 2006 Paper

Genetic and hill-climbing algorithms for high-power laser beam correction

J. Sheldakova, T. Cherezova, A. Kudryashov

Proceedings Volume 5975, 59750S (2006) https://doi.org/10.1117/12.675573

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Proceedings Article | 23 January 2006 Paper

Tiny bimorph mirrors for laser beam control

Alexis Kudryashov, Alexander Sobolev, Vadim Samarkin, Tatyana Cherezova

Proceedings Volume 6113, 61130D (2006) https://doi.org/10.1117/12.658201

KEYWORDS: Mirrors, Electrodes, Monochromatic aberrations, Beam controllers, Computer simulations, Manufacturing, Finite element methods, Prisms, Glasses, MATLAB

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Proceedings Article | 1 September 2005 Paper

A human eye model based on bimorph flexible mirror

Renat Letfullin, Tatyana Cherezova, Alexey Belyakov, Alexis Kudryashov

Proceedings Volume 5864, 58640F (2005) https://doi.org/10.1117/12.632921

KEYWORDS: Eye, Eye models, Mirrors, Calibration, Wavefronts, Electrodes, Monochromatic aberrations, Zemax, Ray tracing, Wavefront sensors

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Proceedings Article | 1 September 2005 Paper

Human retina imaging: anisoplanatism considerations

Alexander Dubinin, Tatyana Cherezova, Alexey Belyakov, Alexis Kudryashov

Proceedings Volume 5864, 58640G (2005) https://doi.org/10.1117/12.632922

KEYWORDS: Eye, Retina, Wavefronts, Image quality, Eye models, Cornea, Crystals, Visualization, Retinal scanning, Image enhancement

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Proceedings Article | 30 August 2005 Paper

Human eye model based on bimorph flexible mirror

Renat Letfullin, Tatyana Cherezova, Aleksey Belyakov, Alexis Kudryashov

Proceedings Volume 5894, 58940A (2005) https://doi.org/10.1117/12.619440

KEYWORDS: Eye, Eye models, Mirrors, Wavefronts, Electrodes, Calibration, Monochromatic aberrations, Wavefront sensors, Deformable mirrors, Instrument modeling

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Proceedings Article | 23 August 2005 Paper

Anisoplanatism in human retina imaging

Alexander Dubinin, Tatyana Cherezova, Alexey Belyakov, Alexis Kudryashov

Proceedings Volume 5894, 589409 (2005) https://doi.org/10.1117/12.619429

KEYWORDS: Eye, Retina, Wavefronts, Eye models, Cornea, Crystals, Visualization, Image quality, Retinal scanning, Wavefront sensors

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Proceedings Article | 19 August 2005 Paper

Optimized bimorph flexible mirrors for laser beam correction and shaping

A. Sobolev, T. Cherezova, A. Kudryashov

Proceedings Volume 5876, 58760F (2005) https://doi.org/10.1117/12.626228

KEYWORDS: Electrodes, Mirrors, Algorithm development, Eye, Solids, Finite element methods, Wavefronts, Inverse problems, Chemical elements, Prisms

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Proceedings Article | 18 August 2005 Paper

Genetic algorithm for intracavity laser beam shaping

Andrey Kostylev, Alexander Sobolev, Tatyana Cherezova, Alexis Kudryashov

Proceedings Volume 5876, 587605 (2005) https://doi.org/10.1117/12.626197

KEYWORDS: Mirrors, Genetic algorithms, Electrodes, Resonators, Near field, Californium, Gaussian beams, Transmission electron microscopy, Active optics, Beam controllers

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Proceedings Article | 12 April 2005 Paper

The use of M2 meter to correct for high-power laser aberrations

Julia Sheldakova, Tatyana Cherezova, Alexander Aleksandrov, Alexey Rukosuev, Alexis Kudryashov

Proceedings Volume 5708, (2005) https://doi.org/10.1117/12.609581

KEYWORDS: Mirrors, Electrodes, Wavefront sensors, Control systems, Genetic algorithms, Wavefronts, High power lasers, Diffraction, Sensors, Charge-coupled devices

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Proceedings Article | 11 November 2004 Paper

Anisoplanatism in adaptive optics compensation of human eye aberrations

Alex Dubinin, Alexey Belyakov, Tatyana Cherezova, Alexis Kudryashov

Proceedings Volume 5572, (2004) https://doi.org/10.1117/12.568272

KEYWORDS: Eye, Adaptive optics, Monochromatic aberrations, Retina, Wavefronts, Visualization, Error analysis, Astronomy, Computer simulations, Zernike polynomials

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Proceedings Article | 11 November 2004 Paper

Double-pass measurement of human eye aberrations: limitations and practical realization

Renat Letfullin, Alexey Belyakov, Tatyana Cherezova, Alexis Kudryashov

Proceedings Volume 5572, (2004) https://doi.org/10.1117/12.568282

KEYWORDS: Eye, Monochromatic aberrations, Eye models, Mirrors, Scattering, Cones, Wavefronts, Wavefront sensors, Retina, Deformable mirrors

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Proceedings Article | 24 October 2002 Paper

Intracavity laser beam shaping by means of a flexible corrector

Tatyana Cherezova, Vadim Samarkin, Sergei Chesnokov, Alexis Kudryashov

Proceedings Volume 4770, (2002) https://doi.org/10.1117/12.459508

KEYWORDS: Mirrors, Laser resonators, Resonators, Output couplers, Deformable mirrors, Disk lasers, Wavefronts, Glasses, Beam shaping, Laser therapeutics

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Proceedings Article | 29 July 2002 Paper

Analysis of the laser intensity distribution

Yu. Sheldakova, Tatyana Cherezova, Alexis Kudryashov

Proceedings Volume 4900, (2002) https://doi.org/10.1117/12.484582

KEYWORDS: Optical testing, CCD cameras, Near field, Charge-coupled devices, Helium neon lasers, Laser beam propagation, Laser applications, Standards development, Mirrors, Near field optics

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Proceedings Article | 6 June 2002 Paper

Low-cost laser-beam analyzer

Tatyana Cherezova, Yu. Sheldakova, Alexis Kudryashov

Proceedings Volume 4629, (2002) https://doi.org/10.1117/12.469498

KEYWORDS: CCD cameras, Optical testing, Near field, Laser beam propagation, Transmission electron microscopy, Signal to noise ratio, Laser applications, Laser development, Standards development, Laser resonators

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Proceedings Article | 30 April 2002 Paper

M2 sensor for the adaptive optical system

Yu. Sheldakova, Tatyana Cherezova, Alexis Kudryashov

Proceedings Volume 4644, (2002) https://doi.org/10.1117/12.464171

KEYWORDS: Sensors, Optical testing, Charge-coupled devices, Control systems, Standards development, Oscilloscopes, Beam controllers, Laser optics, Mirrors, CCD cameras

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Proceedings Article | 1 February 2002 Paper

Low-cost M2-sensor for the adaptive optical system

J. Sheldakova, Tatyana Cherezova, Alexis Kudryashov

Proceedings Volume 4493, (2002) https://doi.org/10.1117/12.454724

KEYWORDS: Sensors, Optical testing, Control systems, Mirrors, CCD cameras, Charge-coupled devices, Oscilloscopes, Adaptive optics, Medicine, Beam controllers

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Proceedings Article | 3 November 1999 Paper

Formation of the specified laser output by means of intracavity active mirrors

Tatyana Cherezova, Sergei Chesnokov, Leonid Kaptsov, Alexis Kudryashov, Vadim Samarkin

Proceedings Volume 3760, (1999) https://doi.org/10.1117/12.367578

KEYWORDS: Mirrors, Electrodes, Resonators, Disk lasers, Carbon dioxide lasers, Laser resonators, Output couplers, Transmission electron microscopy, Electroluminescence, Diffraction

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Proceedings Article | 24 May 1999 Paper

Given laser output formation: adaptive optics approach--theory and experiment

Tatyana Cherezova, Vadim Samarkin, Sergei Chesnokov, Leonid Kaptsov, Alexis Kudryashov

Proceedings Volume 3611, (1999) https://doi.org/10.1117/12.349270

KEYWORDS: Mirrors, Resonators, Laser resonators, Electrodes, Solids, Output couplers, Deformable mirrors, Carbon dioxide lasers, Continuous wave operation, Diffraction

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Proceedings Article | 13 May 1998 Paper

Numerical simulation of the intracavity laser-beam formation by means of adaptive optics

Tatyana Cherezova, Sergei Chesnokov, Leonid Kaptsov, Alexis Kudryashov

Proceedings Volume 3267, (1998) https://doi.org/10.1117/12.308127

KEYWORDS: Mirrors, Electrodes, Diffraction, Disk lasers, Resonators, Actuators, Gaussian beams, Numerical simulations, Adaptive optics, Laser resonators

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Proceedings Article | 31 December 1997 Paper

LWIR and MWIR ultraspectral Fourier transform imager

Andrew Meigs, Leonard John Otten, Tatyana Cherezova, Bruce Rafert, R. Glenn Sellar

Proceedings Volume 3221, (1997) https://doi.org/10.1117/12.298109

KEYWORDS: Fourier transforms, Imaging systems, Long wavelength infrared, Mid-IR, Spectral resolution, Infrared imaging, Infrared radiation, Computer simulations, Signal to noise ratio

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Proceedings Article | 1 September 1996 Paper

The formation of the super-Gaussian output in a CW CO2 laser by intracavity bimorph flexible mirror

T. Cherezova

Proceedings Volume 2778, 27789D (1996) https://doi.org/10.1117/12.2316026

KEYWORDS: Mirrors, Continuous wave operation, Laser applications, Electrodes, Carbon dioxide lasers, Head, Scientific research, Mechanical engineering, Computer generated holography, Spatial filters

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Proceedings Article | 16 August 1994 Paper

Stable resonator with the controlled flexible mirror

Alexis Kudryashov, Tatyana Cherezova

Proceedings Volume 2206, (1994) https://doi.org/10.1117/12.184623

KEYWORDS: Mirrors, Resonators, Optical components, Laser resonators, Diffraction, Adaptive optics, Spherical lenses, Laser optics, Solid state lasers, Deformable mirrors

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Proceedings Article | 16 August 1994 Paper

Adaptive optical system for control of the CW technological YAG;Nd3+ laser beam parameters

Alexis Kudryashov, Tatyana Cherezova, Leonid Kaptsov

Proceedings Volume 2206, (1994) https://doi.org/10.1117/12.184625

KEYWORDS: Mirrors, Solid state lasers, Continuous wave operation, Laser applications, Electrodes, Control systems, Resonators, Laser resonators, Crystals, Laser crystals

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Proceedings Article | 1 April 1994 Paper

Application of intracavity adaptive mirror for CW solid state laser radiation control

Tatyana Cherezova, Leonid Kaptsov, Alexis Kudryashov

Proceedings Volume 2257, (1994) https://doi.org/10.1117/12.171660

KEYWORDS: Mirrors, Solid state lasers, Continuous wave operation, Electrodes, Resonators, Beam controllers, Laser resonators, Laser applications, Crystals, Laser crystals

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Proceedings Article | 26 July 1993 Paper

Control of the CW YaG:Nd3+ laser beam parameters by the adaptive optical system

T. Yu. Cherezova

Proceedings Volume 1983, 19830F (1993) https://doi.org/10.1117/12.2308434

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Proceedings Article | 1 March 1992 Open Access

Formation and control of emission of a solid state laser

Tatyana Cherezova

Proceedings Volume 1603, (1992) https://doi.org/10.1117/12.57903

KEYWORDS: Mirrors, Solid state lasers, Electrodes, Control systems, Laser vision correction, Beam controllers, Physics, Continuous wave operation, Refractive index, Laser stabilization

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In this work an intracavity adaptive system for controlling the radiation of a CW YAG:Nd3+ laser is proposed. Two types of correctors were worked out: a tilt corrector and a bimorph flexible mirror (BFM) .The system permits to reduce by three times laser beam divergence, to decrease by ten times the power instability and to form various output intensity distributions. Parameters of a laser beam depend on different intracavity distortions. In the majority of cases these distortions act as pure phase ones: fluctuations of refractive index of active medium, thermal mirror deformations etc. This distorts the spatial distribution of the radiation intensity and increase the beam divergence. Placing an electronically controlled mirror into cavity one can reduce such undesirebale effects, influence the geometry of the generated modes and suppress the output power fluctuations. In this work we used two types of adaptive mirrors: a tilt corrector and a BFM. Our first task was to stabilize output power of the CWYAG.'Nd3+laser both 1,064? and second harmonic (0,53?) radiation. For this purpose COAT feedback with simple tilt corrector was used. The main results were -10 times reduction instability of 1,064? radiation and 15 times - 0,53? radiation. The YAG:Nd3+ laser was employed as an example to show the possible correction of the lower aberrations of a thermal lens by the 17 electrode BFM1. Under the laser pump current variation from 10 to 34 A the fivefold compensation for the thermal lens astigmatism and other aberrations was obtained. For enlarging the laser beam on BFM we proposed a resonator shown on Fig. 1. As expanding lens we used the end of the active element (AE) with meniscus. Our BFM differed from the one used in Ref. 1 because it had the form of a concave mirror even without any applied voltage to the electrodes. On the Fig. 2 we show the possibility to reduce the laser beam divergence choosing the voltage on BFM electrodes. Output laser beam profile in the multymode regime of generation is shown by curve 1. Curve 2 on Fig. 2 demonstrates the possibility of threefold reduction of laser beam divergence by the intracavity BFM. Also the experimental results of intracavity formation of radiation spatial structure were obtained. Intracavity phase correction made it possible to influence the output near-field and far-field radiation intensity distribution.

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