Dr. Andrey V. Larichev Profile

Dr. Andrey V. Larichev

Deputy Head of Dept

SPIE Involvement:

Author

Proceedings Article | 27 August 2024 Poster + Paper

Project for the development of the adaptive optical system with Rayleigh LGS for the INASAN 2-meter telescope

Evgeniy Kopylov, Andrey Larichev, Nikita Iroshnikov, Mikhail Sachkov

Proceedings Volume 13097, 1309738 (2024) https://doi.org/10.1117/12.3020520

KEYWORDS: Astronomical adaptive optics, Telescopes, Adaptive optics, Deformable mirrors, Mirrors, Wavefront sensors, Astronomy

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SPIE Journal Paper | 8 February 2020

Potential clinical applications of terahertz reflectometry for the assessment of the tear film stability

Ilya Ozheredov, Tatyana Safonova, Ekaterina Sikach, Mikhail Mischenko, Mikhail Prokopchuk, Andrew Larichev, Yulia Listopadskaya, Alexander Shkurinov

OE, Vol. 59, Issue 06, 061622, (February 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.6.061622

KEYWORDS: Terahertz radiation, Reflectometry, Eye, Cornea, Signal detection, Receivers, In vivo imaging, Diagnostics, Optical engineering, Reflectivity

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Proceedings Article | 27 November 2012 Paper

Estimation of atmospheric turbulence parameters with wave front sensor data

N. Iroshnikov, A. Koryabin, A. Larichev, V. Shmalhausen, M. Andreeva

Proceedings Volume 8696, 86960B (2012) https://doi.org/10.1117/12.2012444

KEYWORDS: Turbulence, Sensors, Water, Atmospheric turbulence, Refractive index, Atmospheric propagation, Zernike polynomials, Atmospheric optics, Statistical analysis, Wavefront sensors

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Proceedings Article | 9 March 2012 Paper

Portable retinal imaging for eye disease screening using a consumer-grade digital camera

Simon Barriga, Andrey Larichev, Gilberto Zamora, Peter Soliz

Proceedings Volume 8209, 82091T (2012) https://doi.org/10.1117/12.909318

KEYWORDS: Cameras, Chemical vapor deposition, Eye, Digital cameras, Polarizers, Retinal scanning, Imaging systems, Polarization, Digital imaging, Retina

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Proceedings Article | 3 March 2010 Paper

Low-cost, high-resolution scanning laser ophthalmoscope for the clinical environment

P. Soliz, A. Larichev, G. Zamora, S. Murillo, E. Barriga

Proceedings Volume 7550, 75501G (2010) https://doi.org/10.1117/12.846365

KEYWORDS: Image quality, Scanning laser ophthalmoscopy, Monochromatic aberrations, Adaptive optics, Cameras, Super resolution, Image resolution, Imaging systems, Eye, Visualization

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Proceedings Article | 2 December 2008 Paper

Photoinduced AsSeS thin film phase plates as adaptive optics mirrors for eye aberration correction

S. Fomins, M. Reinfelde, A. Larichev, N. Iroshnikov, A. Gerbreders, M. Ozolinsh

Proceedings Volume 7142, 71421C (2008) https://doi.org/10.1117/12.815948

KEYWORDS: Etching, Thin films, Wavefronts, Adaptive optics, Eye, Chalcogenides, Mirrors, Wet etching, Reflectivity, Refractive index

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Proceedings Article | 12 September 2006 Paper

Adaptive optics in ophthalmology

Nikita Iroshnikov, Andrey Larichev

Proceedings Volume 6284, 62840B (2006) https://doi.org/10.1117/12.714172

KEYWORDS: Eye, Mirrors, Retina, Cameras, Wavefront sensors, Adaptive optics, Wavefronts, Beam splitters, CCD cameras, Visualization

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Proceedings Article | 8 June 2006 Paper

Next generation high resolution adaptive optics fundus imager

P. Fournier, G. Erry, L. Otten, A. Larichev, N. Irochnikov

Proceedings Volume 6018, 601805 (2006) https://doi.org/10.1117/12.669241

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Proceedings Article | 7 March 2006 Paper

SuperRez-II adaptive multispectral fundus imager

A. Larichev, J. Otten, N. Irochnikov, P. Soliz, G. R. G. Erry, V. Panchenko

Proceedings Volume 6138, 613812 (2006) https://doi.org/10.1117/12.658539

KEYWORDS: Eye, Retina, Imaging systems, Mirrors, Cameras, Adaptive optics, Wavefront sensors, Eye models, Beam splitters, Multispectral imaging

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Proceedings Article | 23 May 2001 Paper

Deconvolution of color retinal images with wavefront sensing

Andrey Larichev, Nikita Irochnikov, Pavel Ivanov, Alexis Kudryashov

Proceedings Volume 4251, (2001) https://doi.org/10.1117/12.427879

KEYWORDS: Eye, Mirrors, Retina, Cameras, Wavefront sensors, Deconvolution, Wavefronts, Imaging systems, Electrodes, Optical transfer functions

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Proceedings Article | 3 November 2000 Paper

Depth-sensitive adaptive deconvolution of retinal images

Andrey Larichev, Nikita Irochnikov, Ilia Nikolaev, K. Nesterouk, Alexis Kudryashov

Proceedings Volume 4162, (2000) https://doi.org/10.1117/12.405936

KEYWORDS: Deconvolution, Retina, Cameras, Eye, Electrodes, Mirrors, Monochromatic aberrations, Wavefront sensors, Wavefronts, Imaging systems

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Proceedings Article | 1 September 1996 Paper

High resolution wavefront correction in a LCLV-based system with a phase knife in the optical feedback loop

A. Larichev

Proceedings Volume 2778, 2778DF (1996) https://doi.org/10.1117/12.2316172

KEYWORDS: Wavefronts, Phase shift keying, Feedback loops, Phase modulation, Adaptive optics, Liquid crystals, Mirrors, Spatial filters, Visualization, Feedback control

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Proceedings Article | 1 April 1991 Paper

One-dimensional rotatory waves in the optical systems with nonlinear large-scale field interactions

Vladimir Ivanov, Andrey Larichev, Mikhail Vorontsov

Proceedings Volume 1402, (1991) https://doi.org/10.1117/12.47488

KEYWORDS: Nonlinear optics, Process modeling, Nonlinear control, Diagnostics, Complex systems, Americium, Radon, Photomasks, Phase modulation, Data modeling

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Proceedings Article | 1 April 1991 Paper

Two-dimensional dynamic neural network optical system with simplest types of large-scale interactions

Mikhail Vorontsov, N. Zheleznykh, Andrey Larichev

Proceedings Volume 1402, (1991) https://doi.org/10.1117/12.47489

KEYWORDS: Diffusion, Process modeling, Neural networks, Nonlinear optics, Feedback loops, Diagnostics, Optical networks, Complex systems, Phase modulation, Nonlinear control

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Modern nonlinear and coherent optics provides a great variety of possibilities to create many types of spatially distributed neural network optical systems and uses them to simulate the collective behavior of dynamics systems with nonlocal interactions (e.g., analogs of advanced neural networks).' We can point out the following basic properties of these systems: — intrinsic N-shape nonlinearity (bistable or multistable optical response); — existence of the local excitation transfer mechanism (e.g., diffusion); — possible implementation of large scale (nonlocal) interactions; All these requirements can be fulfilled in nonlinear 2-D feedback optical systems: in various nonlinear resonators and interferometers.2 Complexity and variety of nonlinear dynamic modes (different selfoscillation and dissipative structures, optical turbulence) observed in neural network optical systems with the simplest nonlocal interconnectors promote the search for principal most important models of large scale interactions and corresponding nonlinear dynamic structures. One of these models is one-dimensional rotational instability occurring in a neural network system with rotated field.3 Rotating waves observed in this system have been analyzed in detail.4 Theoretical and experimental research of 2-D models of optical neural networks appears to be most interesting. Implementing any type of "pure" nonlocal interconnectors in an optical experiment is a rather complicated task. Optical aberrations and some other factors result in the fact that additional "spurious" interactions affecting dynamic structures being formed in the system seem to be superimposed on a given type of nonlocal interconnectors. The only possibility to examine multiple nonlinear structures corresponding to a certain type of large scale interactions appears to be a comparative analysis of optical and numerical experiments in which the interconnect topologies can be defined in a "pure" form. 2-D selfoscillation structures observed in a neural network with 2-D optical feedback and nonlocal interconnectors have been studied in this paper. The simplest types of topological transforms, i.e., lateral inversion and rotation, are realized in optical and numerical experiments.

Showing 5 of 14 publications

SPIE Conference Volume | 14 August 2007

International Conference on Lasers, Applications, and Technologies 2007: Laser Technologies for Medicine

SPIE Conference Volume | 19 September 2006

International Conference on Lasers, Applications, and Technologies 2005: Laser Technologies for Environmental Monitoring and Ecological Applications, and Laser Technologies for Medicine

Conference Committee Involvement (2)

Laser Technologies for Medicine

28 May 2007 | Minsk, Belarus

International Conference on Lasers, Applications, and Technologies 2005: Laser Technologies for Environmental Monitoring and Ecological Applications, and Laser Technologies for Medicine

11 May 2005 | St. Petersburg, Russian Federation

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