Dr. Yury N. Zavalov Profile

Dr. Yury N. Zavalov

Sr Researcher at FSRC “Crystallography and Photonics” RAS

Area of Expertise:

laser physics , nonlinear optics , turbulence , low - temperature plasma , laser matter interaction , laser thermal technology

Websites:

Company Website

Profile Summary

Yury N. Zavalov (1960) was graduated from Moscow Power-Engineering Institute ( 1984 ; specialization: electro-physics), and he has defended the thesis “Lasing characteristics of fast –axial flow CO2 laser” for academic degree of Candidate of Physical & Mathematical Sciences in 1997. He is senior scientific researcher, Institute on Laser and Information Technologies of Russian Academy of Science, Shatura, Russia. Areas of research activity: laser physics, nonlinear optics, turbulence, low- temperature plasma.

Publications (26)

Proceedings Article | 21 June 2019 Paper

Paper

Optical method of on-line temperature monitoring on the melt surface in laser metal deposition technology

Y. Zavalov, A. Dubrov, V. Dubrov

Proceedings Volume 11056, 1105633 (2019) https://doi.org/10.1117/12.2527636

KEYWORDS: Laser applications, Pyrometry, Sensors, Particles, Metals, Optical diagnostics, Temperature metrology, Head, Fiber lasers, Image sensors

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Proceedings Article | 21 June 2019 Paper

Paper

Optical methods of on-line diagnostics of processes of the Nickel alloy powder consolidation in the layer-by-layer laser melting technology

Y. Zavalov, A. Dubrov, V. Dubrov

Proceedings Volume 11056, 1105632 (2019) https://doi.org/10.1117/12.2527632

KEYWORDS: Laser applications, Pyrometry, Optical diagnostics, Photodiodes, Spatial light modulators, Nickel, Sensors, Metals, Diagnostics, Radiation effects

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Proceedings Article | 24 May 2018 Paper

Paper

The multichannel pyrometer of the spectral ratio for on-line monitoring in the powder bed additive technologies

Y. Zavalov, A. Dubrov, P. Rodin, F. Kh. Mirzade, V. Glebov, A. Malutin, G. Dubrov

Proceedings Volume 10677, 106772G (2018) https://doi.org/10.1117/12.2307578

KEYWORDS: Optical diagnostics, Photodiodes, Spatial light modulators, Reflection, Oxidation, Pyrometry, Laser applications, Radiation effects, Metals, Optical fibers

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Proceedings Article | 22 May 2018 Paper

Paper

Temperature distribution of gas powder jet formed by coaxial nozzle in laser metal deposition

Y. Zavalov, A. Dubrov, P. Rodin, F. Mirzade, E. Makarova, N. Dubrovin, V. Dubrov

Proceedings Volume 10675, 1067511 (2018) https://doi.org/10.1117/12.2307511

KEYWORDS: Pyrometry, Metals, Radiation effects, Temperature metrology, Photodetectors, Photodiodes, Optical filters, Process control, Process modeling

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Proceedings Article | 26 June 2017 Paper

Paper

Features of the estimation of temperature distribution on the bead formed by the laser aided metal powder deposition

Yuri Zavalov, Alexander Dubrov, Fikret Kh. Mirzade, Vladimir Dubrov

Proceedings Volume 10329, 1032942 (2017) https://doi.org/10.1117/12.2270239

KEYWORDS: Laser applications, Diagnostics, Metals, Optical fibers, Carbon dioxide lasers, Sensors, Pyrometry, Temperature metrology, Laser optics, Infrared sensors, Infrared radiation, Additive manufacturing

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Proceedings Article | 26 June 2017 Paper

Paper

Evaluation of thermal behavior during laser metal deposition using optical pyrometry and numerical simulation

Alexander Dubrov, Yuri Zavalov, Fikret Mirzade, Vladimir Dubrov

Proceedings Volume 10330, 103301K (2017) https://doi.org/10.1117/12.2270269

KEYWORDS: Metals, Pyrometry, Numerical simulations, Carbon dioxide lasers, Convection, Laser applications, Laser energy, Thermography, Optical simulations, Digital micromirror devices, Mathematical modeling, Temperature metrology, 3D modeling, Process modeling, Lawrencium, Lanthanum, Additive manufacturing

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SPIE Journal Paper | 6 September 2012

Spectrum of temperature pulsations of the melt in gas-assisted cutting with fiber laser

Alexander Dubrov, Yury Zavalov, Vladimir Dubrov, Anatoly Grezev, Nikolay Grezev, Elena Makarova, Nickolay Dubrovin

OE, Vol. 51, Issue 9, 094301, (September 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.9.094301

KEYWORDS: Laser cutting, Oxygen, Turbulence, Capillaries, Fiber lasers, Temperature metrology, Pyrometry, Laser applications, Metals, Laser processing

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Proceedings Article | 15 May 2012 Paper

Paper

Pyrometry diagnostic in laser cutting technology

Alexander Dubrov, Vladimir Dubrov, Yury Zavalov, Elena Makarova, Nickoly Dubrovin

Proceedings Volume 8433, 84330W (2012) https://doi.org/10.1117/12.923016

KEYWORDS: Laser cutting, Capillaries, Temperature metrology, Turbulence, Pyrometry, Absorption, Oxygen, Metals, Fiber lasers, Laser applications

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Proceedings Article | 9 June 2006 Paper

Paper

Influence of nonuniform heat-releasing on optical inhomogeneities of active medium turbulent flow in high power CO₂ laser

V. Ya. Panchenko, Yu. Zavalov, M. Galushkin, V. Dubrov, R. Grishaev

Proceedings Volume 6053, 60530K (2006) https://doi.org/10.1117/12.660312

KEYWORDS: Carbon dioxide lasers, Turbulence, High power lasers, Gas lasers, Active optics, Laser resonators, Polonium, Laser applications, Refraction, Refractive index

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Proceedings Article | 12 October 2005 Paper

Paper

The investigation of quality of active medium of FAF RF CO2 laser by luminescent method

V. Panchenko, R. Grishayev, Yu. Zavalov, V. Dubrov, E. Dubrovina

Proceedings Volume 5958, 59582Z (2005) https://doi.org/10.1117/12.622661

KEYWORDS: Gas lasers, Carbon monoxide, Turbulence, Continuous wave operation, Photodiodes, Refraction, Carbon dioxide lasers, Laser optics, Resonators, High power lasers

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Proceedings Article | 7 June 2005 Paper

Paper

The determination of transverse pulsations of turbulent flow velocity in fast-axial flow CO2 laser by phase-conjugation method

S. Buyarov, M. Galuskin, V. Dubrov, V. Panchenko, Yu. Zavalov

Proceedings Volume 5850, (2005) https://doi.org/10.1117/12.633732

KEYWORDS: Diffusion, Carbon dioxide lasers, Four wave mixing, Mirrors, Iris, Phase conjugation, Resonators, Interference (communication), Laser resonators, Diagnostics

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Proceedings Article | 23 March 2005 Paper

Paper

Turbulent flow structure of FAF CO2 laser active medium at nonuniform temperature and heat generation

Mikhail Galushkin, Vladimir Golubev, Yuri Zavalov, Vladimir Dubrov, Roman Grishaev, Sergey Buyarov

Proceedings Volume 5777, (2005) https://doi.org/10.1117/12.611040

KEYWORDS: Carbon dioxide lasers, Turbulence, Refractive index, Gas lasers, Temperature metrology, Ionization, Laser damage threshold, High power lasers, Pulsed laser operation, Refraction

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Proceedings Article | 21 June 2004 Paper

Paper

The investigation of turbulence in FAF CO₂ laser by phase-conjugation method

Sergey Buyarov, Mikhail Galushkin, Vladimir Dubrov, Vladislav Panchenko, Yuri Zavalov

Proceedings Volume 5449, (2004) https://doi.org/10.1117/12.563110

KEYWORDS: Carbon dioxide lasers, Diffusion, Gas lasers, Phase conjugation, Resonators, Mirrors, Turbulence, Four wave mixing, Interference (communication), Iris recognition

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Proceedings Article | 10 November 2003 Paper

Paper

The determination of turbulent parameters of active-medium flow of a CO2 laser by method of intra-cavity four-wave mixing

S. Buyarov, V. Dubrov, M. Galuskin, V. Golubev, R. Grishayev, Vladislav Panchenko, Yu. Zavalov

Proceedings Volume 5120, (2003) https://doi.org/10.1117/12.515475

KEYWORDS: Diffusion, Carbon dioxide lasers, Four wave mixing, Resonators, Mirrors, Sensors, Phase conjugation, Interference (communication), Silicon, Continuous wave operation

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Proceedings Article | 30 April 2002 Paper

Paper

Diagnostics of turbulent flow parmeters of active mixture in fast axial flow CO2 laser

S. Buyarov, V. Dubrov, Michail Galushkin, Vladimir Golubev, R. Grishayev, Andrei Ionin, Andrei Kotkov, Vladislav Panchenko, Yuri Zavalov

Proceedings Volume 4644, (2002) https://doi.org/10.1117/12.464130

KEYWORDS: Carbon dioxide lasers, Diffusion, Diagnostics, Mirrors, Four wave mixing, Resonators, Laser resonators, Photoresistors, High power lasers, Active optics

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Proceedings Article | 25 January 2001 Paper

Paper

Estimation of Cn2 of nonequilibrium turbulent gas flow in CO2 laser on data of luminescence diagnostics

Michail Galushkin, Vladimir Golubev, Vladislav Panchenko, Yuri Zavalov, R. Grishayev

Proceedings Volume 4184, (2001) https://doi.org/10.1117/12.413962

KEYWORDS: Luminescence, Diagnostics, Carbon dioxide lasers, High power lasers, Gas lasers, Turbulence, Plasma, Molecules, Resonators, Convection

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Proceedings Article | 27 July 2000 Paper

Paper

Active medium cw FAF CO2 laser small-scale optical nonuniformities

Michail Galushkin, Yuri Zavalov, Valentina Zavalova

Proceedings Volume 4165, (2000) https://doi.org/10.1117/12.394112

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Proceedings Article | 3 November 1999 Paper

Paper

Optical nonuniformities of nonequilibrium turbulent gas flow in fast-axial-flow CO2 laser

Vladislav Panchenko, Michail Galushkin, Vladimir Golubev, Yuri Zavalov

Proceedings Volume 3760, (1999) https://doi.org/10.1117/12.367583

KEYWORDS: Carbon dioxide lasers, Interferometry, Turbulence, Gas lasers, Luminescence, Molecules, Laser optics, Plasma, Photodiodes, Calibration

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Proceedings Article | 20 January 1999 Paper

Paper

Optical diagnostics of the turbulent flow of the nonequilibrium gas mixture in FAF CO2 laser

Michail Galushkin, Vladimir Golubev, Yuri Zavalov, Valentina Zavalova, Pavel Korolenko, Vladislav Panchenko

Proceedings Volume 3688, (1999) https://doi.org/10.1117/12.337549

KEYWORDS: Carbon dioxide lasers, Turbulence, Laser beam diagnostics, Optical diagnostics, Calibration, Mirrors, Continuous wave operation, Interferometry, Diagnostics, Phase shifts

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Proceedings Article | 5 January 1999 Paper

Paper

Optical nonuniformities of turbulent flow in an FAF CO2 laser active medium

Michail Galushkin, Vladimir Golubev, N. Dubrovin, Yuri Zavalov, Valentina Zavalova, Vladislav Panchenko

Proceedings Volume 3686, (1999) https://doi.org/10.1117/12.335858

KEYWORDS: Turbulence, Carbon dioxide lasers, Luminescence, Active optics, Diffusion, Interferometry, Laser optics, Ionization, Molecules, Calibration

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Proceedings Article | 4 April 1997 Paper

Paper

Optical nonuniformities of active medium of high-power fast-axial-flow industrial CO2 lasers

Michail Galushkin, Vladimir Golubev, Yuri Zavalov, Valentina Zavalova, Vladislav Panchenko

Proceedings Volume 3092, (1997) https://doi.org/10.1117/12.270230

KEYWORDS: Carbon dioxide lasers, Active optics, Diffraction, Thermography, Resonators, High power lasers, Gas lasers, Laser optics, Wavefronts, Refractive index

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Proceedings Article | 27 December 1996 Paper

Paper

Influence of a radial inhomogeneity of the active medium on the output radiation power from a cw CO2 laser with fast axial flow

Michail Galushkin, Vladimir Golubev, V. Dembovetsky, Yuri Zavalov, Valentina Zavalova

Proceedings Volume 3052, (1996) https://doi.org/10.1117/12.262912

KEYWORDS: Continuous wave operation, Carbon dioxide lasers, Gas lasers, Mirrors, Ions, Molecules, Diffusion, Gaussian beams, Carbon monoxide, Ionization

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Proceedings Article | 22 April 1996 Paper

Paper

Fast-axial turbulent flow CO2 laser output characteristics and scaling parameters

V. Dembovetsky, Valentina Zavalova, Yuri Zavalov

Proceedings Volume 2773, (1996) https://doi.org/10.1117/12.238514

KEYWORDS: Mirrors, Carbon dioxide lasers, Laser applications, Resonators, Electro optical modeling, Optical testing, Reflectivity, Gas lasers, Data modeling, Laser processing

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Proceedings Article | 1 March 1996 Paper

Paper

Influence of turbulent diffusion of excited molecules upon energy parameters of fast-axial-flow CO2 laser

Michail Galushkin, Vladimir Golubev, V. Dembovetsky, Yuri Zavalov, Valentina Zavalova

Proceedings Volume 2713, (1996) https://doi.org/10.1117/12.234202

KEYWORDS: Diffusion, Molecules, Mirrors, Molecular lasers, Carbon dioxide lasers, Particles, Resonators, Laser resonators, Diffraction, Reflectivity

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Proceedings Article | 1 March 1996 Paper

Paper

Amplification and nonlinear losses in relaxing laser mixture of continuous wave fast-axial-flow CO2 lasers

Michail Galushkin, Vladimir Golubev, V. Dembovetsky, Yuri Zavalov, Valentina Zavalova, Vladislav Panchenko

Proceedings Volume 2713, (1996) https://doi.org/10.1117/12.234191

KEYWORDS: Absorption, Mirrors, Carbon dioxide lasers, Resonators, Diffraction, Molecules, Continuous wave operation, Gaussian beams, Laser resonators, Optimization (mathematics)

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Proceedings Article | 1 April 1994 Paper

Paper

High-repetition-rate regimes of CO2 laser with fast axial gas flowing

Boris Averboukh, V. Dembovetsky, Yuri Zavalov

Proceedings Volume 2257, (1994) https://doi.org/10.1117/12.171638

KEYWORDS: Carbon dioxide lasers, Pulsed laser operation, Laser applications, Q switches, Beam shaping, Absorption, Mirrors, Gas lasers, Resonators, Continuous wave operation

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Showing 5 of 26 publications

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