Dr. Mikhail I. Charnotskii Profile

Dr. Mikhail I. Charnotskii

SPIE Involvement:

Author

Publications (32)

Proceedings Article | 31 August 2017 Presentation + Paper

OAM of beam waves in random inhomogeneous medium

Mikhail Charnotskii

Proceedings Volume 10408, 104080K (2017) https://doi.org/10.1117/12.2273451

KEYWORDS: Turbulence, Wave propagation, Optical vortices, Beam propagation method, Electromagnetic theory, Gaussian beams, Free space

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Proceedings Article | 30 August 2017 Presentation + Paper

Shack-Hartmann measurements of the transverse linear and orbital angular momenta after propagation through turbulence

Mikhail Charnotskii, Terry Brennan

Proceedings Volume 10408, 104080L (2017) https://doi.org/10.1117/12.2275703

KEYWORDS: Sensors

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Proceedings Article | 30 August 2017 Presentation + Paper

Statistics of partially-polarized fields: beyond the Stokes vector and coherence matrix

Mikhail Charnotskii

Proceedings Volume 10407, 104070Y (2017) https://doi.org/10.1117/12.2273090

KEYWORDS: Polarization, Probability theory, Remote sensing, Heterodyning, Atmospheric monitoring, Atmospheric optics, Atmospheric sensing, Environmental monitoring, Radar

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Proceedings Article | 25 August 2017 Presentation + Paper

Propagation of transverse linear and orbital angular momenta of beam waves

Mikhail Charnotskii

Proceedings Volume 10347, 103470Z (2017) https://doi.org/10.1117/12.2273093

KEYWORDS: Wave propagation, Radio propagation, Optical vortices, Spiral phase plates, Beam propagation method, Beam shaping, Gaussian beams, Coherence (optics), Electromagnetic theory, Free space

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Proceedings Article | 26 October 2016 Presentation + Paper

Statistics and generation of non-Markov phase screens

Mikhail Charnotskii, Gary Baker

Proceedings Volume 9979, 99790A (2016) https://doi.org/10.1117/12.2237341

KEYWORDS: Wave propagation, Atmospheric propagation, 3D modeling, Beam propagation method, Statistical modeling, Turbulence, 3D displays, Refractive index, Solids, Correlation function

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Proceedings Article | 19 September 2016 Presentation + Paper

Optimization of beam geometry for focusing through turbulence

Mikhail Charnotskii, Gary Baker

Proceedings Volume 9979, 997903 (2016) https://doi.org/10.1117/12.2237336

KEYWORDS: Turbulence, Point spread functions, Atmospheric propagation, Optical testing, Sensors, Gaussian beams, Beam propagation method, Wave propagation, Scintillation, Diffraction

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Proceedings Article | 19 September 2016 Presentation + Paper

Paraxial polarized waves in inhomogeneous media

Mikhail Charnotskii

Proceedings Volume 9979, 997907 (2016) https://doi.org/10.1117/12.2237332

KEYWORDS: Atmospheric propagation, Radio propagation, Wave propagation, Turbulence, Refractive index, Polarization, Scattering, Atmospheric turbulence, Atmospheric optics, Ordinary differential equations

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Proceedings Article | 21 October 2014 Paper

Scintillations in the imaging through turbulence

Mikhail Charnotskii

Proceedings Volume 9242, 92421Q (2014) https://doi.org/10.1117/12.2067426

KEYWORDS: Scintillation, Turbulence, Point spread functions, Scintillation imaging, Wave propagation, Modulation transfer functions, Imaging systems, Atmospheric propagation, Super resolution, Laser sources

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Fluctuations in the images of scenes viewed over large distances are the most obvious manifestation of the turbulence effects on the imaging of the incoherent objects. While the average or long-exposure imaging is arguably the most well studied topic of the optical propagation in turbulence, and substantial progress was also made in understanding the average short-exposure imaging, the image scintillations for complex extended scenes are not well understood. We discuss some available results of the image scintillation theory and report on some recent progress. We introduce the concept of the scintillation imaging, when unlike the conventional turbulence imaging techniques the variance of the series of images of the scene is calculated and used to gain information either about the object or about the turbulence on the propagation path. The third constraint in the turbulent PSF [1] plays a critical role in the scintillation imaging making scintillation images insensitive to the constant background and emphasizing the areas with higher local contrast. The bilinear structure of the Object-to-Variance (O2V) maps makes it impossible to use the analogues of the PSF or MTF for scintillation images and precludes development of the general theory of scintillation imaging. We discuss the fundamental properties of the O2V kernel and discuss four examples of scintillation images of simple objects. We present the measurement data where colored scintillation images of the edge were obtained. The variance distributions are normalized using the traditional long-exposure images to remove dependence on the object brightness. In this case scintillations are concentrated near the edge and carry information about the turbulence on the imaging path. The amplitude and width of these variance distributions are sensitive to the turbulence level and can be used as passive scintillometer without the need to deploy the laser source and receiver at both ends of the propagation path. Variance images of the object with sinusoidal brightness distribution consists of the uniform background and doublefrequency sinusoidal oscillations. It has the features consistent with turbulent super-resolution originally described in [2]. Namely, for unresolved object oscillating components disappears while the background persevere.

Proceedings Article | 3 October 2014 Paper

Modeling of the turbulent phase in strong scintillation conditions

Mikhail Charnotskii

Proceedings Volume 9224, 922406 (2014) https://doi.org/10.1117/12.2061397

KEYWORDS: Spiral phase plates, Turbulence, Scintillation, Wave propagation, Atmospheric propagation, Statistical modeling, Atmospheric modeling, Atmospheric optics, Monte Carlo methods, Krypton

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Proceedings Article | 3 October 2014 Paper

Statistics of the turbulent phase in strong scintillation conditions

Mikhail Charnotskii

Proceedings Volume 9224, 922405 (2014) https://doi.org/10.1117/12.2061396

KEYWORDS: Scintillation, Turbulence, Wave propagation, Probability theory, Spiral phase plates, Ocean optics, Coherence (optics), Atmospheric propagation, Spherical lenses, Solids

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Proceedings Article | 9 June 2014 Paper

Internal anisotropy of the turbulent scintillations

Mikhail Charnotskii

Proceedings Volume 9080, 908014 (2014) https://doi.org/10.1117/12.2053339

KEYWORDS: Scintillation, Receivers, Anisotropy, Turbulence, Visualization, Statistical analysis, Statistical modeling, Atmospheric optics, Atmospheric propagation, Wave propagation

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Proceedings Article | 25 September 2013 Paper

Improved sparse spectrum model for the turbulent phase

Mikhail Charnotskii

Proceedings Volume 8874, 88740T (2013) https://doi.org/10.1117/12.2026735

KEYWORDS: Statistical modeling, Phase modulation, Turbulence, Statistical analysis, Atmospheric propagation, Atmospheric modeling, Solids, Computer simulations, Mathematical modeling, Atmospheric turbulence

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Proceedings Article | 17 May 2013 Paper

Sparse spectrum model for the turbulent phase simulations

Mikhail Charnotskii

Proceedings Volume 8732, 873208 (2013) https://doi.org/10.1117/12.2016437

KEYWORDS: Statistical modeling, Monte Carlo methods, Computer simulations, Optical simulations, Solids, Systems modeling, Turbulence, Atmospheric modeling, Performance modeling, Adaptive optics

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SPIE Journal Paper | 3 April 2013

Energy conservation: a third constraint on the turbulent point spread function

Mikhail Charnotskii

OE, Vol. 52, Issue 04, 046001, (April 2013) https://doi.org/10.1117/12.10.1117/1.OE.52.4.046001

KEYWORDS: Point spread functions, Turbulence, Scintillation, Wave propagation, Statistical modeling, Optical engineering, Solids, Diffraction, Atmospheric propagation, Coherence (optics)

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Proceedings Article | 24 October 2012 Paper

Long- and short-term scintillation of focused beams and point spread functions in the turbulent atmosphere

Mikhail Charnotskii, Gary Baker

Proceedings Volume 8517, 85170G (2012) https://doi.org/10.1117/12.929769

KEYWORDS: Scintillation, Turbulence, Wave propagation, Atmospheric propagation, Point spread functions, Beam propagation method, Computer simulations, Solids, Lawrencium, Atmospheric scintillation

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SPIE Journal Paper | 1 June 2012

Statistical modeling of the point spread function for imaging through turbulence

Mikhail Charnotskii

OE, Vol. 51, Issue 10, 101706, (June 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.10.101706

KEYWORDS: Point spread functions, Modulation transfer functions, Turbulence, Scintillation, Statistical analysis, Optical engineering, Wave propagation, Surface plasmons, Statistical modeling, Radio propagation

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Proceedings Article | 18 May 2012 Paper

Energy conservation: a forgotten property of the turbulent point spread function

Mikhail Charnotskii

Proceedings Volume 8355, 83550L (2012) https://doi.org/10.1117/12.919408

KEYWORDS: Point spread functions, Turbulence, Scintillation, Wave propagation, Statistical modeling, Systems modeling, Imaging systems, Solids, Lawrencium, Modulation transfer functions

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Proceedings Article | 15 September 2011 Paper

Twelve mortal sins of the turbulence propagation science

Mikhail Charnotskii

Proceedings Volume 8162, 816205 (2011) https://doi.org/10.1117/12.894550

KEYWORDS: Turbulence, Wave propagation, Point spread functions, Scintillation, Atmospheric propagation, Radio propagation, Spherical lenses, Beam propagation method, Diffraction, Francium

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Proceedings Article | 7 September 2011 Paper

Arago spot and turbulent distortions

Mikhail Charnotskii

Proceedings Volume 8161, 816103 (2011) https://doi.org/10.1117/12.892562

KEYWORDS: Turbulence, Scintillation, Sensors, Scattering, Wave propagation, Diffraction, Free space optics, Telescopes, Calibration, Atmospheric propagation

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Proceedings Article | 25 May 2011 Paper

Practical calculation of the beam scintillation index based on the rigorous asymptotic propagation theory

Mikhail Charnotskii, Gary Baker

Proceedings Volume 8038, 803804 (2011) https://doi.org/10.1117/12.884632

KEYWORDS: Scintillation, Wave propagation, Collimation, Beam propagation method, Turbulence, Atmospheric propagation, Solids, Spherical lenses, Computer simulations, Optical simulations

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Proceedings Article | 10 May 2011 Paper

Statistics of the point spread function for imaging through turbulence

Mikhail Charnotskii

Proceedings Volume 8014, 80140W (2011) https://doi.org/10.1117/12.884248

KEYWORDS: Point spread functions, Modulation transfer functions, Turbulence, Scintillation, Wave propagation, Lawrencium, Surface plasmons, Radio propagation, Statistical modeling, Diffraction

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Proceedings Article | 24 August 2010 Paper

Coupling turbulence-distorted wave front to fiber: wave propagation theory perspective

Mikhail Charnotskii

Proceedings Volume 7814, 78140I (2010) https://doi.org/10.1117/12.860625

KEYWORDS: Scintillation, Turbulence, Wave propagation, Diffusers, Amplitude modulation, Scattering, Adaptive optics, Spherical lenses, Wavefronts, Telecommunications

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Proceedings Article | 4 May 2010 Paper

Coherence of beam arrays propagating in the turbulent atmosphere

Mikhail Charnotskii

Proceedings Volume 7685, 76850Q (2010) https://doi.org/10.1117/12.849522

KEYWORDS: Atmospheric propagation, Wave propagation, Beam propagation method, Radio propagation, Turbulence, Polarization, Point spread functions, Dielectric polarization, Electromagnetism, Atmospheric optics

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Proceedings Article | 22 April 2010 Paper

Weak and strong off-axis beam scintillations and beam wander for propagation in turbulence

Mikhail Charnotskii

Proceedings Volume 7685, 768502 (2010) https://doi.org/10.1117/12.850749

KEYWORDS: Scintillation, Turbulence, Beam propagation method, Atmospheric propagation, Wave propagation, Collimation, Gaussian beams, Statistical analysis, Laser scattering, Scattering

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Proceedings Article | 12 August 2009 Paper

Weak and strong beam scintillations for the ground-to-space propagation

Mikhail Charnotskii

Proceedings Volume 7463, 746304 (2009) https://doi.org/10.1117/12.826160

KEYWORDS: Scintillation, Beam propagation method, Turbulence, Atmospheric propagation, Wave propagation, Collimation, Scattering, Transmitters, Statistical analysis, Gaussian beams

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Proceedings Article | 9 May 2009 Paper

Laser beam propagation in the low-order turbulence: exact solution

Mikhail Charnotskii

Proceedings Volume 7324, 732403 (2009) https://doi.org/10.1117/12.818069

KEYWORDS: Turbulence, Beam propagation method, Gaussian beams, Laser beam propagation, Atmospheric propagation, Wave propagation, Lenses, Diffraction, Scintillation, Point spread functions

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Proceedings Article | 5 September 2008 Paper

Superresolution in dewarped anisoplanatic images

Mikhail Charnotskii

Proceedings Volume 7076, 70760E (2008) https://doi.org/10.1117/12.791433

KEYWORDS: Super resolution, Point spread functions, Diffraction, Atmospheric propagation, Turbulence, Atmospheric modeling, Image processing, Spatial frequencies, Wave propagation, Imaging systems

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Proceedings Article | 25 October 1999 Paper

Tilt-invariant approximation for the admittance operator in the rough-surface scattering theory

Mikhail Charnotskii

Proceedings Volume 3784, (1999) https://doi.org/10.1117/12.366702

KEYWORDS: Scattering, Adaptive optics, Electromagnetic scattering theory, Wave propagation, Reflection, Numerical analysis, Fourier transforms

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Proceedings Article | 23 September 1997 Paper

Short-exposure imaging and short-term laser beam spread in a turbulent atmosphere

Mikhail Charnotskii

Proceedings Volume 3125, (1997) https://doi.org/10.1117/12.279026

KEYWORDS: Modulation transfer functions, Point spread functions, Turbulence, Diffraction, Imaging systems, Atmospheric propagation, Laser beam propagation, Spatial frequencies, Beam propagation method, Wave propagation

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Proceedings Article | 25 August 1995 Paper

Imaging in turbulence beyond diffraction limits

Mikhail Charnotskii

Proceedings Volume 2534, (1995) https://doi.org/10.1117/12.217758

KEYWORDS: Turbulence, Diffraction, Super resolution, Image processing, Telescopes, Solids, Image quality, Scintillation, Statistical analysis, Charge-coupled devices

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Proceedings Article | 15 September 1993 Paper

Short-term laser beam spread in turbulent atmosphere

Mikhail Charnotskii

Proceedings Volume 1968, (1993) https://doi.org/10.1117/12.154845

KEYWORDS: Atmospheric propagation, Remote sensing, Beam propagation method, Modulation transfer functions, Turbulence, Atmospheric optics, Spatial filters, Diffraction, Adaptive optics, Sensors

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Proceedings Article | 1 August 1992 Paper

Short-exposure imaging of nonisoplanatic objects through turbulence

Mikhail Charnotskii

Proceedings Volume 1688, (1992) https://doi.org/10.1117/12.137909

KEYWORDS: Modulation transfer functions, Point spread functions, Atmospheric propagation, Image filtering, Telescopes, Turbulence, Remote sensing, Solids, Diffraction, Spatial filters

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