Mr. Alexander N. Nikitin Profile

Alexander N. Nikitin

Physicist-Project Manager at Institute for Dynamics of Geospheres RAS

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Author

Publications (27)

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

Proc. SPIE. 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics

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

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Proceedings Article | 12 November 2020 Paper

Correction of dynamic phase turbulent aberrations of a laser beam with a frequency of 1500 Hz

F. Starikov, M. Volkov, V. Bogachev, A. Khlebnikov, A. Rukosuev, A. Nikitin

Proc. SPIE. 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics

KEYWORDS: Diffraction, Mirrors, Electrodes, Wavefront sensors, Wavefronts, Adaptive optics, Field programmable gate arrays, Deformable mirrors, Turbulence, Wavefront distortions

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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

Proc. SPIE. 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics

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

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Proceedings Article | 18 September 2020 Presentation + Paper

Dynamic correction of the laser beam distortion by 2000 Hz FPGA-based adaptive optical system

A. Nikitin, F. Starikov, M. Volkov, V. Bogachev, A. Khlebnikov, A. Rukosuev

Proc. SPIE. 11506, Laser Communication and Propagation through the Atmosphere and Oceans IX

KEYWORDS: Computing systems, Wavefronts, Field programmable gate arrays, Control systems, Distortion, Atmospheric turbulence, Earth's atmosphere, Atmospheric modeling, Atmospheric optics

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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

Proc. SPIE. 11508, Unconventional Imaging and Adaptive Optics 2020

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

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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

Proc. SPIE. 11486, Laser Beam Shaping XX

KEYWORDS: Mirrors, Electrodes, Deformable mirrors

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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

Proc. SPIE. 11487, Optical Manufacturing and Testing XIII

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

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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

Proc. SPIE. 11266, Laser Resonators, Microresonators, and Beam Control XXII

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

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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

Proc. SPIE. 11272, Free-Space Laser Communications XXXII

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

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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

Proc. SPIE. 11266, Laser Resonators, Microresonators, and Beam Control XXII

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

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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

Proc. SPIE. 11107, Laser Beam Shaping XIX

KEYWORDS: Adaptive optics, Deformable mirrors

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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

Proc. SPIE. 11135, Unconventional and Indirect Imaging, Image Reconstruction, and Wavefront Sensing 2019

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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

Proc. SPIE. 10904, Laser Resonators, Microresonators, and Beam Control XXI

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

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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

Proc. SPIE. 10904, Laser Resonators, Microresonators, and Beam Control XXI

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

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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

Proc. SPIE. 10925, Photonic Instrumentation Engineering VI

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

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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

Proc. SPIE. 10886, Adaptive Optics and Wavefront Control for Biological Systems V

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

Proc. SPIE. 10772, Unconventional and Indirect Imaging, Image Reconstruction, and Wavefront Sensing 2018

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

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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

Proc. SPIE. 10744, Laser Beam Shaping XVIII

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

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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

Proc. SPIE. 10712, Optical Manipulation Conference

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

Proc. SPIE. 10539, Photonic Instrumentation Engineering V

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

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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

Proc. SPIE. 10518, Laser Resonators, Microresonators, and Beam Control XX

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

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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

Proc. SPIE. 10518, Laser Resonators, Microresonators, and Beam Control XX

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

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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

Proc. SPIE. 10410, Unconventional and Indirect Imaging, Image Reconstruction, and Wavefront Sensing 2017

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

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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

Proc. SPIE. 10073, Adaptive Optics and Wavefront Control for Biological Systems III

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

Proc. SPIE. 10090, Laser Resonators, Microresonators, and Beam Control XIX

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

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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

Proc. SPIE. 9754, Photonic Instrumentation Engineering III

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

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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

Proc. SPIE. 9369, Photonic Instrumentation Engineering II

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

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Showing 5 of 27 publications

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