Dr. Julia V. Sheldakova Profile

Dr. Julia V. Sheldakova

SPIE Involvement:

Conference Chair | Author | Editor

Publications (93)

Proceedings Article | 1 October 2024 Poster + Paper

Flat-top and doughnut-like laser beam profiles: an overview of the modified algorithm for converting the arbitrary shaped beam using phase only spatial light modulator

Ilya Galaktionov, Julia Sheldakova, Alexander Nikitin, Vladimir Toporovsky, Pavel Kuzmitsky, Alexis Kudryashov

Proceedings Volume 13130, 131300J (2024) https://doi.org/10.1117/12.3028201

KEYWORDS: Deformable mirrors, Spatial light modulators, Signal intensity, Wavefront sensors, Wavefronts, Phase distribution, Laser cutting, Adaptive optics, Temperature distribution, Mirrors

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Proceedings Article | 12 March 2024 Poster + Paper

Beam-path alignment system for high-power laser setups

Vladimir Toporovsky, Ilya Galaktionov, Alexander Alexandrov, Alexis Kudryashov, Julia Sheldakova

Proceedings Volume 12871, 128710N (2024) https://doi.org/10.1117/12.3023351

KEYWORDS: Cameras, Wavefronts, High power lasers, Semiconductor lasers, Near field, Kinematics, Laser radiation, Wavefront sensors, Near field optics, Mirrors

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Proceedings Article | 12 March 2024 Poster + Paper

Thermomechanical behavior of stacked-actuator deformable mirrors under incident high-power laser radiation

Vladimir Toporovsky, Pavel Kuzmitsky, Ilya Galaktionov, Alexis Kudryashov, Julia Sheldakova

Proceedings Volume 12871, 128710M (2024) https://doi.org/10.1117/12.3023344

KEYWORDS: Deformable mirrors, Laser radiation, Heatsinks, Actuators, Wavefronts, High power lasers, Mirrors, Reflection, Mirror surfaces, Surface finishing

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Proceedings Article | 12 March 2024 Poster + Paper

Wide-aperture multichannel Shack-Hartmann sensor for multispectral wavefront measurements

Ilya Galaktionov, Alexander Nikitin, Julia Sheldakova, Vladimir Toporovsky, Alexis Kudryashov

Proceedings Volume 12871, 128710L (2024) https://doi.org/10.1117/12.3014349

KEYWORDS: Wavefront sensors, Adaptive optics, Wavefronts, Atmospheric propagation, Atmospheric optics, Sensors, Laser beam propagation, Laser radiation, Free space optics, Atmospheric particles

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Proceedings Article | 12 March 2024 Poster + Paper

Atmospheric turbulence generator: software and hardware implementation of Kolmogorov phase screen simulation system

Ilya Galaktionov, Julia Sheldakova, Vladimir Toporovsky, Alexis Kudryashov

Proceedings Volume 12871, 128710K (2024) https://doi.org/10.1117/12.3014325

KEYWORDS: Deformable mirrors, Adaptive optics, Atmospheric propagation, Atmospheric optics, Wavefronts, Atmospheric turbulence, Laser beam propagation, Wavefront sensors, Free space optics, Turbulence

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Proceedings Article | 17 October 2023 Paper

Overcoming challenges in laser beam focusing through a moderately scattering medium: stacked-actuator vs. bimorph deformable mirror

Ilya Galaktionov, Julia Sheldakova, Vladimir Toporovsky, Alexey Rukosuev, Alexis Kudryashov

Proceedings Volume 12780, 127800P (2023) https://doi.org/10.1117/12.2689613

KEYWORDS: Deformable mirrors, Laser scattering, Electrodes, Light scattering, Wavefronts, Mirrors, Refractive index, Ocean optics, Laser radiation

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Proceedings Article | 26 September 2023 Poster + Paper

Software and hardware implementation of the algorithm for 2-mirrors automatic laser beam alignment system

Ilya Galaktionov, Vladimir Toporovsky, Alexander Nikitin, Alexey Rukosuev, Alex Alexandrov, Julia Sheldakova, Alexander Laskin, Alexis Kudryashov

Proceedings Volume 12667, 126670I (2023) https://doi.org/10.1117/12.2676742

KEYWORDS: Near field, Automatic alignment, Wavefront sensors, Control systems, Laser systems engineering, Wavefronts, Sensors, Mirrors, Algorithm development, Reflection

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Proceedings Article | 26 September 2023 Poster + Paper

Adaptive system with Zernike-based hill-climbing algorithm for super Gaussian and doughnut-like beam shaping

Ilya Galaktionov, Alexander Nikitin, Julia Sheldakova, Vladimir Toporovsky, Alexander Laskin, Alexis Kudryashov

Proceedings Volume 12667, 126670J (2023) https://doi.org/10.1117/12.2676756

KEYWORDS: Adaptive optics, Wavefront sensors, Spatial light modulators, Wavefronts, Sensors, Light scattering, Beam shaping, Scattering media, Phase distribution, Laser scattering

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Proceedings Article | 8 December 2022 Paper

Deformable piezoelectric mirrors with high density of control elements

Vladimir Toporovskiy, Alexis Kudryashov, Julia Sheldakova, Ilya Galaktionov, Vadim Samarkin

Proceedings Volume 12341, 123411I (2022) https://doi.org/10.1117/12.2645061

KEYWORDS: Mirrors, Deformable mirrors, Electrodes, Wavefronts, Actuators, Copper, Surface finishing, Capacitance, Wavefront aberrations, Ultrasonics

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Proceedings Article | 8 December 2022 Paper

Piezoelectric bimorph mirrors with various number of electrodes for scattered laser beam focusing

Ilya Galaktionov, Julia Sheldakova, Vladimir Toporovsky, Alexis Kudryashov

Proceedings Volume 12341, 123411T (2022) https://doi.org/10.1117/12.2642942

KEYWORDS: Mirrors, Electrodes, Light scattering, Wavefronts, Scattering, Sensors, Laser scattering, Wavefront sensors

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Proceedings Article | 3 October 2022 Presentation + Paper

Modified Fizeau interferometer with the polynomial and FFT smoothing algorithm

Ilya Galaktionov, Julia Sheldakova, Vladimir Toporovsky, Alexis Kudryashov

Proceedings Volume 12223, 122230T (2022) https://doi.org/10.1117/12.2632181

KEYWORDS: Reconstruction algorithms, Fizeau interferometers, Wavefronts, Interferometers, Interferometry, Fourier transforms, Detection and tracking algorithms

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Proceedings Article | 3 October 2022 Poster + Presentation + Paper

Efficient technique to measure the concentration value of a scattering suspension using Bouguer-Lambert-Beer law

Ilya Galaktionov, Julia Sheldakova, Vladimir Toporovsky, Alexis Kudryashov

Proceedings Volume 12216, 122160U (2022) https://doi.org/10.1117/12.2632182

KEYWORDS: Scattering, Laser scattering, Sensors, Light scattering, CCD image sensors, CCD cameras, Atmospheric modeling

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Proceedings Article | 3 October 2022 Presentation + Paper

Phase-only spatial light modulator for focusing a moderately scattered visible range laser beam

Ilya Galaktionov, Julia Sheldakova, Alexander Nikitin, Vladimir Toporovsky, Alexis Kudryashov

Proceedings Volume 12218, 1221808 (2022) https://doi.org/10.1117/12.2631997

KEYWORDS: Scattering, Light scattering, Laser scattering, Spatial light modulators, Wavefronts, Adaptive optics, Monte Carlo methods, Sensors, Refractive index

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Proceedings Article | 3 October 2022 Poster + Presentation + Paper

Numerical analysis of efficiency of light focusing through a moderately scattering medium with the use of deformable mirrors

Ilya Galaktionov, Julia Sheldakova, Vladimir Toporovsky, Alexis Kudryashov

Proceedings Volume 12218, 122180C (2022) https://doi.org/10.1117/12.2632681

KEYWORDS: Light scattering, Mirrors, Scattering, Deformable mirrors, Laser scattering, Electrodes, Scattering media, Geometrical optics, Dynamic light scattering

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Proceedings Article | 4 March 2022 Presentation + Paper

Shack-Hartmann sensor with B-spline approximation technique

Ilya Galaktionov, Alexander Nikitin, Julia Sheldakova, Alexis Kudryashov

Proceedings Volume 11987, 119870K (2022) https://doi.org/10.1117/12.2614658

KEYWORDS: Wavefronts, Wavefront sensors, Sensors, Zernike polynomials, Monochromatic aberrations, Wave propagation, Reconstruction algorithms

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Proceedings Article | 4 March 2022 Presentation + Paper

FPGA based laser beam stabilization system

Julia Sheldakova, Ilya Galaktionov, Alexander Nikitin, Alexander Alexandrov, Alexis Kudryashov, Vadim Belousov, Alexey Rukosuev

Proceedings Volume 11987, 119870C (2022) https://doi.org/10.1117/12.2614525

KEYWORDS: Field programmable gate arrays, Mirrors, Photodiodes, Data communications, Zernike polynomials, Wavefronts, Laser systems engineering, Turbulence, Data conversion, Wavefront sensors

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Proceedings Article | 4 March 2022 Presentation + Paper

Calibration of a Shack-Hartmann wavefront sensor using spherical wavefronts from a point source

Alexander Nikitin, Ilya Galaktionov, Julia Sheldakova, Alexis Kudryashov, Dmitrii Denisov, Anastasiya Zolotukhina

Proceedings Volume 11987, 119870J (2022) https://doi.org/10.1117/12.2615161

KEYWORDS: Wavefronts, Sensors, Calibration, Spherical lenses, Wavefront sensors, Microlens, Cameras, Digital cameras, Distance measurement, Sensor calibration

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Proceedings Article | 4 March 2022 Poster + Presentation + Paper

Robust stack-array deformable mirror for laser beam control

Vladimir Toporovsky, Vadim Samarkin, Alexis Kudryashov, Alexander Panich, Alexander Sokallo, Anatoliy Malykhin, Julia Sheldakova

Proceedings Volume 11987, 119870M (2022) https://doi.org/10.1117/12.2614509

KEYWORDS: Actuators, Deformable mirrors, Mirrors, Wavefronts, Surface finishing, Glasses, Beam controllers, Coating, Multilayers, Manufacturing

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Proceedings Article | 4 March 2022 Poster + Presentation + Paper

Statistical analysis of a wavefront distorted by laboratory turbulence in terms of Zernike polynomials

Julia Sheldakova, Vadim Belousov, Alexander Nikitin, Vladimir Toporovsky, Alexey Rukosuev, Alexis Kudryashov

Proceedings Volume 11987, 119870L (2022) https://doi.org/10.1117/12.2614533

KEYWORDS: Zernike polynomials, Turbulence, Statistical analysis, Wavefronts, Monochromatic aberrations, Wavefront sensors, Adaptive optics, Microlens array, Field programmable gate arrays, Mirrors

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Proceedings Article | 4 March 2022 Presentation + Paper

Wide-aperture deformable mirror for correcting and improving focusing of multi-petawatt Ti:Sa laser beam

Vladimir Toporovsky, Vadim Samarkin, Alexis Kudryashov, Alexander Alexandrov, Ilya Galaktionov, Alexander Nikitin, Alexey Rukosuev, Julia Sheldakova

Proceedings Volume 11987, 119870F (2022) https://doi.org/10.1117/12.2614522

KEYWORDS: Mirrors, Electrodes, Deformable mirrors, Wavefronts, Distortion, Optical amplifiers, Zernike polynomials, Wavefront sensors, Phase shifts, Optical components

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Proceedings Article | 16 December 2021 Paper

Laser beam focusing through a moderately scattering medium using LCOS-SLM

Ilya Galaktionov, Alexander Nikitin, Julia Sheldakova, Alexis Kudryashov

Proceedings Volume 11916, 119161L (2021) https://doi.org/10.1117/12.2605028

KEYWORDS: Scattering, Light scattering, Spatial light modulators, Wavefronts, Zernike polynomials, Refractive index

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Proceedings Article | 16 December 2021 Paper

Analysis of laboratory turbulence by spectral methods

Alexey Rukosuev, Vadim Belousov, Alexander Nikitin, Julia Sheldakova, Alexis Kudryashov

Proceedings Volume 11916, 119161H (2021) https://doi.org/10.1117/12.2603463

KEYWORDS: Wavefronts, Turbulence, Zernike polynomials, Mirrors, Wavefront sensors, Wavefront aberrations, Fourier transforms, Field programmable gate arrays

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Proceedings Article | 1 August 2021 Poster + Paper

B-spline approximation of a wavefront measured by Shack-Hartmann sensor

Ilya Galaktionov, Alexander Nikitin, Julia Sheldakova, Alexis Kudryashov

Proceedings Volume 11818, 118180N (2021) https://doi.org/10.1117/12.2598249

KEYWORDS: Wavefronts, Wavefront sensors, Zernike polynomials, Optical testing, Shape analysis, Reconstruction algorithms

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Proceedings Article | 1 August 2021 Poster + Paper

Comparison of stacked actuator and bimorph mirrors for scattered laser-beam focusing

Ilya Galaktionov, Vladimir Toporovsky, Julia Sheldakova, Alexis Kudryashov

Proceedings Volume 11818, 118180O (2021) https://doi.org/10.1117/12.2599209

KEYWORDS: Mirrors, Light scattering, Scattering, Deformable mirrors, Laser scattering, Wavefronts, Wavefront sensors, Actuators, Electrodes

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Proceedings Article | 5 March 2021 Presentation + Paper

Focusing laser beam through pinhole using high-resolution stacked-actuator deformable mirror

Alexander Nikitin, Ilya Galaktionov, Julia Sheldakova, Alexis Kudryashov, Vadim Samarkin, Alexey Rukosuev, Vladimir Toporovsky

Proceedings Volume 11672, 116720W (2021) https://doi.org/10.1117/12.2578116

KEYWORDS: Deformable mirrors, Mirrors, Laser energy, Energy efficiency

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Proceedings Article | 5 March 2021 Poster + Presentation + Paper

Small-aperture stacked-array deformable mirror made of the piezoceramic combs

Vladimir Toporovsky, Alexis Kudryashov, Vadim Samarkin, Anatoliy Panich, Alexander Sokallo, Anatoliy Malykhin, Alexander Skrylev, Julia Sheldakova

Proceedings Volume 11672, 1167215 (2021) https://doi.org/10.1117/12.2578126

KEYWORDS: Deformable mirrors, Mirrors, Atmospheric optics, Wavefront aberrations, Manufacturing, Adaptive optics, Actuators

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Proceedings Article | 5 March 2021 Presentation + Paper

Wavefront correction of laser beam distorted by fan heater turbulence using an adaptive optical system with a frequency of 2000 Hz

A. Rukosuev, V. Belousov, A. Nikitin, Yu. Sheldakova, A. Kudryashov, V. Bogachev, M. Volkov, S. Garanin, F. Starikov

Proceedings Volume 11678, 116780P (2021) https://doi.org/10.1117/12.2578143

KEYWORDS: Wavefronts, Turbulence, Data modeling, Wavefront distortions, Optical components, Mirrors, Field programmable gate arrays, Control systems

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Proceedings Article | 5 March 2021 Poster + Presentation + Paper

Bimorph vs stacked actuator deformable mirror for laser beam focusing through a moderately scattering medium

Ilya Galaktionov, Julia Sheldakova, Vladimir Toporovsky, Vadim Samarkin, Alexis Kudryashov

Proceedings Volume 11672, 1167214 (2021) https://doi.org/10.1117/12.2577604

KEYWORDS: Laser scattering, Scattering, Deformable mirrors, Actuators, Wavefront sensors, Wavefront distortions, Wave propagation, Sensors, Fiber optic gyroscopes

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Proceedings Article | 5 March 2021 Presentation

Welcome and Introduction to SPIE Conference 11672

Vladimir Ilchenko, Andrea Armani, Julia Sheldakova

Proceedings Volume 11672, 1167202 (2021) https://doi.org/10.1117/12.2592481

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Proceedings Article | 12 November 2020 Paper

Development and investigation of small-aperture bimorph deformable mirror for correction of low-order aberrations of laser radiation

V. Toporovsky, A. Kudryashov, J. Sheldakova, V. Samarkin

Proceedings Volume 11560, 115601Z (2020) https://doi.org/10.1117/12.2575599

KEYWORDS: Electrodes, Mirrors, Deformable mirrors, Wavefronts, Silver, Manufacturing, Laser engraving, Laser applications, Ultrasonics, Copper

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Proceedings Article | 12 November 2020 Paper

Comparison of efficiency of bimorph mirror and spatial light modulator for laser beam focusing through a moderately scattering medium

Ilya Galaktionov, Julia Sheldakova, Alexander Nikitin, Alexis Kudryashov

Proceedings Volume 11560, 115602A (2020) https://doi.org/10.1117/12.2575723

KEYWORDS: Mirrors, Scattering, Laser scattering, Light scattering, Distortion, CCD cameras, Spatial light modulators, Deformable mirrors, Electrodes, Wavefront sensors

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Proceedings Article | 12 November 2020 Paper

Adaptive optical system for correction of laser beam going through turbulent atmosphere

V. Belousov, I. Galaktionov, A. Kudryashov, A. Nikitin, O. Otrubyannikova, A. Rukosuev, V. Samarkin, I. Sivertceva, Ju. Sheldakova

Proceedings Volume 11560, 1156026 (2020) https://doi.org/10.1117/12.2575650

KEYWORDS: Wavefronts, Adaptive optics, Field programmable gate arrays, Mirrors, Atmospheric optics, Wavefront sensors, Wavefront distortions, Deformable mirrors, Optical calibration, Atmospheric corrections

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Proceedings Article | 14 September 2020 Presentation + Paper

Flat-top beam formation with miniature bimorph deformable mirror

Julia Sheldakova, Vladimir Toporovsky, Ilya Galaktionov, Alexander Nikitin, Alexey Rukosuev, Vadim Samarkin, Alexis Kudryashov

Proceedings Volume 11486, 114860E (2020) https://doi.org/10.1117/12.2569387

KEYWORDS: Deformable mirrors, Electrodes, Mirrors

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Proceedings Article | 14 September 2020 Presentation + Paper

FPGA-based 2 kHz closed-loop adaptive optical system with stacked actuator deformable mirror

J. Sheldakova, A. Rukosuev, V. Belousov, I. Galaktionov, A. Nikitin, V. Samarkin, A. Kudryashov

Proceedings Volume 11508, 115080K (2020) https://doi.org/10.1117/12.2569315

KEYWORDS: Actuators, Deformable mirrors, Earth's atmosphere, Turbulence, Wavefronts, Satellite communications, Satellites, Optical communications, Computing systems, Human-machine interfaces

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Proceedings Article | 20 August 2020 Presentation + Paper

A method for reconstructing the equation of the aspherical surface of mirrors in an explicit form using a device with a wavefront sensor

Alexey Sakharov, Nikolay Baryshnikov, Valery Karasik, Julia Sheldakova, Alexis Kudryashov, Alexander Nikitin

Proceedings Volume 11487, 114870B (2020) https://doi.org/10.1117/12.2569339

KEYWORDS: Wavefronts, Mirrors, Optical spheres, Wavefront sensors, Aspheric lenses, Error analysis, Sensors, Optics manufacturing, Manufacturing

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Proceedings Article | 2 March 2020 Presentation + Paper

Applicability of small size wavefront correctors to compensate for wavefront distortions in laser systems

Vladimir Toporovsky, Alexis Kudryashov, Vadim Samarkin, Julia Sheldakova, Alexey Rukosuev

Proceedings Volume 11266, 1126619 (2020) https://doi.org/10.1117/12.2548325

KEYWORDS: Mirrors, Electrodes, Deformable mirrors, Wavefronts, Actuators, Laser engraving, Ultrasonics, Zernike polynomials, Manufacturing, Wavefront sensors

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Proceedings Article | 2 March 2020 Paper

Miniature bimorph deformable mirror for laser beam shaping

Julia Sheldakova, Ilya Galaktionov, Alexander Nikitin, Alexey Rukosuev, Vadim Samarkin, Vladimir Toporovsky, Alexis Kudryashov

Proceedings Volume 11266, 112661L (2020) https://doi.org/10.1117/12.2548292

KEYWORDS: Mirrors, Deformable mirrors, Laser engraving, Laser applications, Adaptive optics, Beam shaping, Wavefronts, Manufacturing, Cameras

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Proceedings Article | 2 March 2020 Presentation + Paper

Focusing laser beam through pinhole using stacked-actuator deformable mirror

Alexander Nikitin, Ilya Galaktionov, Julia Sheldakova, Alexis Kudryashov, Vadim Samarkin, Alexey Rukosuev, Vladimir Toporovsky

Proceedings Volume 11266, 112661B (2020) https://doi.org/10.1117/12.2548327

KEYWORDS: Deformable mirrors, Mirrors, Electrodes, Photodiodes, Diffraction, Wavefronts, Adaptive optics, Collimators, Zemax, Wavefront sensors

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Proceedings Article | 2 March 2020 Paper

1.5 kHz adaptive optical system for free-space communication tasks

Alexey Rukosuev, Vadim Belousov, Ilya Galaktionov, Alexis Kudryashov, Alexander Nikitin, Vadim Samarkin, Julia Sheldakova

Proceedings Volume 11272, 112721G (2020) https://doi.org/10.1117/12.2548337

KEYWORDS: Field programmable gate arrays, Adaptive optics, Wavefronts, Cameras, Interfaces, Turbulence, Mirrors, Wavefront sensors, Telecommunications, Wavefront distortions

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Proceedings Article | 9 September 2019 Presentation + Paper

Adaptive optics for laser-beam focusing through the pinhole

Alexis Kudryashov, Alexander Nikitin, Ilya Galaktionov, Julia Sheldakova, Vadim Samarkin, Alexey Rukosuev

Proceedings Volume 11107, 111070F (2019) https://doi.org/10.1117/12.2534008

KEYWORDS: Adaptive optics, Deformable mirrors

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Proceedings Article | 9 September 2019 Presentation + Paper

Bimorph deformable mirrors for high-order aberrations simulation

Vladimir Toporovsky, Alexis Kudryashov, Vadim Samarkin, Julia Sheldakova, Alexey Rukosuev, Arkadiy Skvortsov, Danila Pshonkin

Proceedings Volume 11107, 111070E (2019) https://doi.org/10.1117/12.2533772

KEYWORDS: Deformable mirrors, Mirrors, Manufacturing, Electrodes, Wavefronts, Actuators, Microelectromechanical systems, Atmospheric modeling, Ultrasonics, Laser engraving

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Proceedings Article | 6 September 2019 Presentation + Paper

Laser beam focusing through the scattering medium using bimorph deformable mirror and spatial light modulator

Ilya Galaktionov, Alexis Kudryashov, Julia Sheldakova, Alexander Nikitin

Proceedings Volume 11135, 111350B (2019) https://doi.org/10.1117/12.2533985

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Proceedings Article | 6 September 2019 Presentation + Paper

Water-cooled stacked-actuator deformable mirror for atmospheric applications

Vladimir Toporovskiy, Alexis Kudryashov, Vadim Samarkin, Julia Sheldakova, Alexey Rukosuev

Proceedings Volume 11135, 111350A (2019) https://doi.org/10.1117/12.2533984

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Proceedings Article | 21 March 2019 Presentation + Paper

Stacked-actuators deformable mirror vs bimorph mirror for laser beam shaping

Julia Sheldakova, Ilya Galaktionov, Alexander Nikitin, Alexey Rukosuev, Vladimir Toporovsky, Alexis Kudryashov, Vadim Samarkin

Proceedings Volume 10904, 109041K (2019) https://doi.org/10.1117/12.2509521

KEYWORDS: Mirrors, Deformable mirrors, Electrodes, Actuators, Wavefront sensors, Wavefronts, Sensors, Beam shaping, Genetic algorithms, Adaptive optics

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Proceedings Article | 21 March 2019 Presentation + Paper

Focusing laser beam through pinhole using bimorph deformable mirror

Alexander Nikitin, Ilya Galaktionov, Julia Sheldakova , Alexis Kudryashov, Vadim Samarkin, Alexey Rukosuev

Proceedings Volume 10904, 109041I (2019) https://doi.org/10.1117/12.2510134

KEYWORDS: Deformable mirrors, Mirrors, Electrodes, Photodiodes, Diffraction, Wavefronts, Adaptive optics, Collimators, Zemax, Wavefront sensors

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Proceedings Article | 7 March 2019 Presentation + Paper

Absolute calibration of a Shack-Hartmann wavefront sensor for measurements of wavefronts

Alexander Nikitin, Ilya Galaktionov, Julia Sheldakova, Alexis Kudryashov, Nikolay Baryshnikov, Dmitrii Denisov, Valerii Karasik, Alexey Sakharov

Proceedings Volume 10925, 109250K (2019) https://doi.org/10.1117/12.2510047

KEYWORDS: Wavefronts, Sensors, Calibration, Cameras, Microlens, Wavefront sensors, Spherical lenses, Manufacturing, Light sources, Distance measurement

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Proceedings Article | 4 March 2019 Presentation + Paper

New generation of the miniature bimorph mirrors for compensation of the wavefront distortions

Vladimir Toporovsky, Alexis Kudryashov, Vadim Samarkin, Julia Sheldakova, Alexey Rukosuev, Arkadiy Skvortsov, Danila Pshonkin

Proceedings Volume 10931, 109310O (2019) https://doi.org/10.1117/12.2510104

KEYWORDS: Electrodes, Mirrors, Deformable mirrors, Laser engraving, Ultrasonics, Wavefronts, Silver, Wavefront sensors, Wavefront distortions, Laser applications

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Proceedings Article | 4 March 2019 Presentation + Paper

Wide aperture high resolution stacked-actuator deformable mirror for high power laser beam correction

Vladimir Toporovsky, Alexis Kudryashov, Vadim Samarkin, Julia Sheldakova, Alexey Rukosuev

Proceedings Volume 10898, 1089809 (2019) https://doi.org/10.1117/12.2510144

KEYWORDS: Actuators, Mirrors, Deformable mirrors, Glasses, High power lasers, Wavefronts, Atmospheric propagation, Diagnostics, Turbulence, Coating

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Proceedings Article | 20 February 2019 Paper

Laser beam focusing through the dense multiple scattering suspension using bimorph mirror

Ilya Galaktionov, Alexis Kudryashov, Julia Sheldakova, Alexander Nikitin

Proceedings Volume 10886, 1088619 (2019) https://doi.org/10.1117/12.2509621

KEYWORDS: Mirrors, Sensors, Wavefront sensors, Scattering, Light scattering, Laser scattering, Electrodes, Deformable mirrors, CCD cameras

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Proceedings Article | 18 September 2018 Presentation + Paper

Laser beam focusing through the scattering medium-low order aberration correction approach

Ilia Galaktionov, Alexander Nikitin, Vadim Samarkin, Julia Sheldakova, Alexis Kudryashov

Proceedings Volume 10772, 107720W (2018) https://doi.org/10.1117/12.2324275

KEYWORDS: Distortion, Scattering, Mirrors, Laser scattering, Electrodes, Sensors, Light scattering, Wavefront sensors, Deformable mirrors, CCD cameras

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Proceedings Article | 18 September 2018 Presentation + Paper

Water-cooled stacked-actuator deformable mirror for high CW power laser beam correction

Vladimir Toporovskiy, Alexis Kudryashov, Vadim Samarkin, Julia Sheldakova, Alexey Rukosuev

Proceedings Volume 10772, 107720U (2018) https://doi.org/10.1117/12.2324271

KEYWORDS: Mirrors, Actuators, Deformable mirrors, Wavefronts, Atmospheric propagation, Turbulence, Adaptive optics, Wave propagation, High power lasers

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Proceedings Article | 14 September 2018 Presentation + Paper

High-resolution bimorph deformable mirror for laser beam shaping

Vladimir Toporovskiy, Arkadiy Skvortsov, Alexis Kudryashov, Julia Sheldakova, Danila Pshonkin

Proceedings Volume 10744, 107440R (2018) https://doi.org/10.1117/12.2324259

KEYWORDS: Mirrors, Electrodes, Deformable mirrors, Laser engraving, Monochromatic aberrations, Ultrasonics, Silver, Laser applications, Ocean optics, Wavefronts

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Proceedings Article | 14 September 2018 Presentation + Paper

LC phase modulator vs. deformable mirror for laser beam shaping: What is better?

Julia Sheldakova, Ilya Galaktionov, Alexander Nikitin, Alexey Rukosuev, Alexis Kudryashov

Proceedings Volume 10744, 107440S (2018) https://doi.org/10.1117/12.2324260

KEYWORDS: Modulators, Deformable mirrors, Wavefronts, Beam shaping, CCD cameras, Wavefront sensors, Image processing

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Proceedings Article | 24 April 2018 Paper

Adaptive optical system for laser beam formation

Julia Sheldakova, Alexis Kudryashov, Alexey Rukosuev, Alexander Nikitin, Ilya Galaktionov, Vladimir Toporovsky

Proceedings Volume 10712, 107121A (2018) https://doi.org/10.1117/12.2318986

KEYWORDS: Wavefront sensors, Deformable mirrors, Mirrors, Wavefronts, Electrodes, Sensors, Beam shaping, Phase measurement, CCD cameras, CCD image sensors

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Proceedings Article | 22 February 2018 Presentation + Paper

Comparative analysis of methods and optical-electronic equipment to control the form parameters of spherical mirrors

Alexander Nikitin, Nikolay Baryshnikov, Dmitrii Denisov, Valerii Karasik, Alexey Sakharov, Pavel Romanov, Julia Sheldakova, Alexis Kudryashov

Proceedings Volume 10539, 105390Z (2018) https://doi.org/10.1117/12.2297078

KEYWORDS: Spherical lenses, Sensors, Wavefronts, Mirrors, Optical testing, Wavefront sensors, Interferometry, Interferometers, Cameras, Fizeau interferometers

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Proceedings Article | 16 February 2018 Presentation + Paper

Formation of the doughnut and Super-Gaussian intensity distribution by means of different types of wavefront correctors

Julia Sheldakova, Alexis Kudryashov, Ilya Galaktionov, Vadim Samarkin, Alexander Nikitin, Alexey Rukosuev

Proceedings Volume 10518, 105181E (2018) https://doi.org/10.1117/12.2297089

KEYWORDS: Deformable mirrors, Mirrors, Wavefronts, Modulators, Actuators, Wavefront sensors, Monochromatic aberrations, Electrodes, Beam shaping, Zernike polynomials

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Proceedings Article | 16 February 2018 Presentation + Paper

Comparison of the efficiency of laser beam focusing through the scattering medium using 14- and 31-channel bimorph mirrors

Ilya Galaktionov, Alexis Kudryashov, Julia Sheldakova, Alexander Nikitin, Vadim Samarkin

Proceedings Volume 10518, 1051818 (2018) https://doi.org/10.1117/12.2297080

KEYWORDS: Distortion, Scattering, Laser scattering, Mirrors, Sensors, Electrodes, Wavefront sensors, Light scattering, Deformable mirrors, CCD cameras

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Proceedings Article | 6 September 2017 Paper

Laser beam focusing through the atmosphere aerosol

Ilya Galaktionov, Alexis Kudryashov, Julia Sheldakova, Vadim Samarkin, Alexander Nikitin

Proceedings Volume 10410, 104100M (2017) https://doi.org/10.1117/12.2276180

KEYWORDS: Atmospheric optics, Atmospheric particles, Atmospheric propagation, Aerosols, Laser scattering, Scattering, Adaptive optics, Deformable mirrors, Laser beam propagation

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Proceedings Article | 6 September 2017 Paper

Fast adaptive optical system for the high-power laser beam correction in atmosphere

Alexis Kudryashov, Anna Lylova, Vadim Samarkin, Julia Sheldakova, Alexander Alexandrov

Proceedings Volume 10410, 104100L (2017) https://doi.org/10.1117/12.2276177

KEYWORDS: Deformable mirrors, Wavefront sensors, Mirrors, Actuators, Atmospheric turbulence, Electrodes, Turbulence, Atmospheric corrections, Cameras, Atmospheric propagation

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Proceedings Article | 23 February 2017 Presentation + Paper

Extremely large bimorph deformable mirror for high intense laser beam correction

Alexis Kudryashov, Vadim Samarkin, Alex Aleksandrov, Gilles Borsoni, Takahisa Jitsuno, Pavel Romanov, Julia Sheldakova

Proceedings Volume 10084, 1008408 (2017) https://doi.org/10.1117/12.2257461

KEYWORDS: Mirrors, Deformable mirrors, Wavefront sensors, Sensors, High power lasers, Electrodes, Actuators, Glasses, Coating, Manufacturing, Wavefront distortions

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Proceedings Article | 21 February 2017 Paper

Laser beam focusing through the scattering medium by means of adaptive optics

Ilya Galaktionov, Alexis Kudryashov, Julia Sheldakova, Alexander Nikitin

Proceedings Volume 10073, 100731L (2017) https://doi.org/10.1117/12.2256447

KEYWORDS: Light scattering, Laser scattering, Scattering, Deformable mirrors, Wavefront sensors, Sensors, Laser beam propagation, Adaptive optics, Beam analyzers, Electrodes, CCD cameras, Mirrors, CCD image sensors, Information operations

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Proceedings Article | 20 February 2017 Presentation + Paper

The use of modified hill-climbing algorithm for laser beam focusing through the turbid medium

Ilya Galaktionov, Alexis Kudryashov, Julia Sheldakova, Alexander Nikitin

Proceedings Volume 10090, 100901K (2017) https://doi.org/10.1117/12.2257447

KEYWORDS: Mirrors, Laser scattering, Scattering, Wavefront sensors, Sensors, CCD cameras, CCD image sensors, Deformable mirrors, Electrodes, Actuators, Light scattering

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Proceedings Article | 20 February 2017 Presentation + Paper

Beam shaping by means of different wavefront correctors

Julia Sheldakova, Alexis Kudryashov, Anna Lylova, Vadim Samarkin, Alexander Alexandrov

Proceedings Volume 10090, 100901S (2017) https://doi.org/10.1117/12.2257448

KEYWORDS: Beam shaping, Mirrors, Wavefronts, Wavefront sensors, Sensors, Adaptive optics, Deformable mirrors, Beam controllers, Actuators, Monochromatic aberrations, CCD cameras, Electrodes, Zernike polynomials

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Proceedings Article | 22 April 2016 Paper

Problems of uniform focal spot formation by means of deformable mirror

Julia Sheldakova, Alexis Kudryashov, Anna Lylova, Vadim Samarkin, Alexey Rukosuev

Proceedings Volume 9727, 97271V (2016) https://doi.org/10.1117/12.2222001

KEYWORDS: Wavefront sensors, Deformable mirrors, Electrodes, Sensors, Mirrors, Zernike polynomials, Wavefronts, CCD cameras, CMOS sensors, Actuators

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Proceedings Article | 22 April 2016 Paper

Largest in the world bimorph deformable mirror for high-power laser beam correction

Alexis Kudryashov, Vadim Samarkin, Alex Aleksandrov, Giles Borsoni, Takahisa Jitsuno, Pavel Romanov, Julia Sheldakova

Proceedings Volume 9727, 97271I (2016) https://doi.org/10.1117/12.2222003

KEYWORDS: Mirrors, Deformable mirrors, Electrodes, Actuators, High power lasers, Wavefront sensors, Glasses, Coating, Wavefront distortions, Wavefronts

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Proceedings Article | 16 March 2016 Paper

A device based on the Shack-Hartmann wave front sensor for testing wide aperture optics

Alexander Nikitin, Julia Sheldakova, Alexis Kudryashov, Gilles Borsoni, Dmitrii Denisov, Valerii Karasik, Alexey Sakharov

Proceedings Volume 9754, 97540K (2016) https://doi.org/10.1117/12.2219282

KEYWORDS: Sensors, Wavefronts, Wavefront sensors, Optical testing, Interferometry, Fizeau interferometers, Mirrors, Microlens, Interferometers, Cameras

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Proceedings Article | 8 October 2015 Paper

Investigation of dual-wavelength laser beam propagation along the in-door atmospheric path

Alina Gorelaya, Elena Shubenkova, Dmitriy Dmitriev, Anna Dmitrieva, Alexis Kudryashov, Igor Lovchiy, Egor Shalymov, Yulia Sheldakova, Arkadii Tsvetkov, Dmitriy Venediktov, Vladimir Venediktov

Proceedings Volume 9641, 96410C (2015) https://doi.org/10.1117/12.2194332

KEYWORDS: Sensors, Atmospheric optics, Atmospheric propagation, Adaptive optics, Wavefront sensors, Wavefront distortions, Wave propagation, Mirrors, Laser beam propagation, Wavefronts

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Proceedings Article | 8 October 2015 Paper

The real-time atmospheric turbulence modeling and compensation with use of adaptive optics

Anna Lylova, Alexis Kudryashov, Julia Sheldakova, Gilles Borsoni

Proceedings Volume 9641, 96410K (2015) https://doi.org/10.1117/12.2194980

KEYWORDS: Mirrors, Deformable mirrors, Wavefront sensors, Actuators, Adaptive optics, Wavefronts, Electrodes, Atmospheric turbulence, Atmospheric modeling, Atmospheric optics

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Proceedings Article | 8 October 2015 Paper

Measurements of parabolic mirrors aberrations in hyperspectral microscope

Anna Lylova, Georgy Kalenkov, Julia Sheldakova, Sergey Kalenkov, Alexis Kudryashov, Alexander Shtanko

Proceedings Volume 9641, 96410N (2015) https://doi.org/10.1117/12.2194901

KEYWORDS: Mirrors, Wavefront sensors, Wavefronts, Sensors, Zernike polynomials, Microscopes, Cameras, Image restoration, Monochromatic aberrations, Geometrical optics

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Proceedings Article | 4 September 2015 Paper

Laser beam propagation and wavefront correction in turbid media

Ilya Galaktionov, Alexis Kudryashov, Julia Sheldakova, Alexander Byalko, Gilles Borsoni

Proceedings Volume 9617, 96170D (2015) https://doi.org/10.1117/12.2195734

KEYWORDS: Light scattering, Wavefronts, Photons, Scattering, Electrodes, Deformable mirrors, Wavefront sensors, Laser beam propagation, Laser scattering, Wavefront aberrations

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Proceedings Article | 4 September 2015 Paper

The real-time atmospheric turbulence modeling and compensation with the use of adaptive optics

Anna Lylova, Alexis Kudryashov, Julia Sheldakova, Gilles Borsoni

Proceedings Volume 9617, 961706 (2015) https://doi.org/10.1117/12.2195735

KEYWORDS: Deformable mirrors, Mirrors, Actuators, Wavefront sensors, Atmospheric turbulence, Wavefronts, Adaptive optics, Electrodes, Atmospheric modeling, Ferroelectric materials

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Proceedings Article | 2 September 2015 Paper

New approach for laser beam formation by means of deformable mirrors

Julia Sheldakova, Alexis Kudryashov, Anna Lylova, Vadim Samarkin, Alexander Byalko

Proceedings Volume 9581, 95810H (2015) https://doi.org/10.1117/12.2195404

KEYWORDS: Wavefront sensors, Deformable mirrors, Wavefronts, Sensors, Zernike polynomials, CCD cameras, Mirrors, Electrodes, Monochromatic aberrations, CMOS sensors

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Proceedings Article | 6 April 2015 Paper

Hartmannometer versus Fizeau Interferometer: advantages and drawbacks

Alexander Nikitin, Julia Sheldakova, Alexis Kudryashov, Dmitrii Denisov, Valerii Karasik, Alexey Sakharov

Proceedings Volume 9369, 936905 (2015) https://doi.org/10.1117/12.2085263

KEYWORDS: Wavefronts, Fizeau interferometers, Sensors, Wavefront sensors, Photovoltaics, Detector arrays, Calibration, Optical testing, Optical components, Interferometers

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Proceedings Article | 3 April 2015 Paper

Formation of the desired light intensity distribution on the target with bimorph deformable mirror

Julia Sheldakova, Alexis Kudryashov, Ann Lylova

Proceedings Volume 9343, 93430R (2015) https://doi.org/10.1117/12.2084959

KEYWORDS: Deformable mirrors, Wavefront sensors, Wavefronts, Sensors, Electrodes, Mirrors, Zernike polynomials, Cameras, Point spread functions, CMOS sensors

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Proceedings Article | 7 March 2014 Paper

Wide aperture (more than 500 mm) deformable mirrors for high power laser beam correction

Alexis Kudryashov, Vadim Samarkin, Alexander Alexandrov, Julia Sheldakova, Pavel Romanov

Proceedings Volume 8960, 89601G (2014) https://doi.org/10.1117/12.2046497

KEYWORDS: Mirrors, Electrodes, Surface finishing, Deformable mirrors, Actuators, High power lasers, Monochromatic aberrations, Polishing, Ceramics, Carbon dioxide lasers

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Proceedings Article | 19 February 2011 Paper

Laser beam formation by adaptive optics

J. Sheldakova, V. Samarkin, A. Kudryashov, A. Rukosuev

Proceedings Volume 7913, 79130I (2011) https://doi.org/10.1117/12.880766

KEYWORDS: Electrodes, Mirrors, Wavefronts, Wavefront sensors, Deformable mirrors, Adaptive optics, Phase conjugation, Continuous wave operation, High power lasers, Monochromatic aberrations

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Proceedings Article | 19 February 2011 Paper

Shack-Hartmann wavefront sensor and its problems

Alexis Kudryashov, Valentina Zavalova, Alexey Rukosuev, Alexander Alexandrov, Julia Sheldakova, Vadim Samarkin

Proceedings Volume 7913, 791309 (2011) https://doi.org/10.1117/12.880763

KEYWORDS: Wavefronts, Wavefront sensors, Wavefront aberrations, Sensors, Pulsed laser operation, Laser systems engineering, High power lasers, Monochromatic aberrations, Optical amplifiers, Laser glasses

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Proceedings Article | 30 August 2010 Paper

Multi-dither algorithm on Shack-Hartmann wavefront sensor for laser beam formation

J. Sheldakova, A. Kudryashov, V. Samarkin, A. Rukosuev, A. Alexandrov, P. Romanov

Proceedings Volume 7789, 778912 (2010) https://doi.org/10.1117/12.863966

KEYWORDS: Wavefront sensors, Wavefronts, Electrodes, Mirrors, Phase conjugation, Genetic algorithms, Evolutionary algorithms, Genetics, Sensors, Wavefront aberrations

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Proceedings Article | 18 February 2010 Paper

Multi dither adaptive system based on Shack-Hartmann wavefront sensor

J. Sheldakova, A. Kudryashov, V. Samarkin, A. Alexandrov

Proceedings Volume 7579, 75790I (2010) https://doi.org/10.1117/12.847938

KEYWORDS: Wavefront sensors, Wavefronts, Electrodes, Mirrors, Phase conjugation, Genetic algorithms, Evolutionary algorithms, Genetics, Sensors, Wavefront aberrations

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Proceedings Article | 19 February 2009 Paper

Shack-Hartmann wavefront sensor versus Fizeau interferometer for laser beam measurements

Julia Sheldakova, Alexis Kudryashov, Valentina Zavalova, Pavel Romanov

Proceedings Volume 7194, 71940B (2009) https://doi.org/10.1117/12.822692

KEYWORDS: Wavefront sensors, Phase shifts, Fizeau interferometers, Optical testing, Interferometers, Wavefronts, Laser optics, Sensors, Reconstruction algorithms, CCD cameras

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Proceedings Article | 20 February 2008 Paper

Problem of Shack-Hartmann wavefront sensor and interferometer use while testing strongly distorted laser wavefront

Julia Sheldakova, Alexis Kudryashov, Vadim Samarkin, Valentina Zavalova

Proceedings Volume 6872, 68720B (2008) https://doi.org/10.1117/12.774086

KEYWORDS: Mirrors, Wavefront sensors, Interferometers, Distance measurement, Deformable mirrors, Wavefronts, Electrodes, Sensors, High power lasers, Ferroelectric materials

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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 | 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 | 22 February 2006 Paper

Correction of the radiation of 1 kW CW diode-pumped glass laser

J. Sheldakova, V. Samarkin, Alexis Kudryashov

Proceedings Volume 6101, 61010B (2006) https://doi.org/10.1117/12.674316

KEYWORDS: Mirrors, Electrodes, Wavefront sensors, Continuous wave operation, Wavefronts, Deformable mirrors, Sensors, Genetic algorithms, Glasses, Semiconductor lasers

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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 | 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 | 1 June 2004 Paper

Genetic and hill-climbing algorithms for laser beam correction

Julia Sheldakova, Alexey Rukosuev, Alexis Kudryashov

Proceedings Volume 5333, (2004) https://doi.org/10.1117/12.538446

KEYWORDS: Electrodes, Mirrors, Genetic algorithms, Wavefront sensors, Wavefronts, Genetics, Charge-coupled devices, Adaptive optics, Deformable mirrors, Control systems

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Proceedings Article | 25 June 2003 Paper

Multidither adaptive optical system for laser beam shaping

J. Sheldakova, Alexey Rukosuev, Alexander Alexandrov, Alexis Kudryashov

Proceedings Volume 4969, (2003) https://doi.org/10.1117/12.499280

KEYWORDS: Mirrors, Electrodes, Sensors, Wavefronts, Control systems, Adaptive optics, Deformable mirrors, Beam controllers, CCD image sensors, Wavefront sensors

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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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