Prof. Alexander Pukhov Profile

Prof. Alexander Pukhov

at Heinrich Heine Univ Dusseldorf

SPIE Involvement:

Author

Proceedings Article | 14 May 2019 Presentation

Chirped pulse Raman amplification in plasma (Conference Presentation)

Gregory Vieux, Silvia Cipiccia, Gregor Welsh, Sam Yoffe, Matthew Tooley, Craig Picken, Graeme McKendrick, Felix Gaertner, Enrico Brunetti, Bengt Eliasson, Bernhard Ersfeld, MinSup Hur, John Farmer, Joao Dias, Thomas Kuehl, Alexander Pukhov, Dino Jaroszynski

Proceedings Volume 11036, 1103604 (2019) https://doi.org/10.1117/12.2522976

KEYWORDS: Plasma, Raman spectroscopy, Laser applications, Laser amplifiers, Backscatter, Raman scattering, Scattering, Capillaries, Picosecond phenomena

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Proceedings Article | 14 May 2019 Presentation

Proton acceleration in a laser-induced relativistic electron vortex (Conference Presentation)

Longqing Yi, Alexander Pukhov, Baifei Shen, István Pusztai, Tünde Fülöp

Proceedings Volume 11037, 110370A (2019) https://doi.org/10.1117/12.2522106

KEYWORDS: Plasma, Magnetism, Pulsed laser operation, Photonic integrated circuits, Optical simulations, Motion models, Solids, Plasma generation, Computer simulations

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When a plasma foil is irradiated by an intense laser pulse at a grazing angle, the pre-pulse of the laser evaporates the solid plasma and generates an expanding near-critical-density (NCD) layer. We consider the situation where the plasma density profile in this layer is strongly nonuniform (high-contrast laser), i.e., the density scale length is comparable to the laser spot size. In this case a relativistic electron vortex (EV) is excited in the NCD layer after the laser pulse depletion. It drifts perpendicular to the density gradient at a constant velocity, typically 0.2 - 0.3 times the speed of the light. The strong coupling between laser and NCD plasma gives rise to intense current density that generates significant magnetic field. The magnetic pressure leads to charge separation in the vortex, which can be used to accelerate protons. The basic mechanism of acceleration is different from the magnetic vortex acceleration (MVA), where a magnetic dipole vortex is generated in a uniform NCD target and acceleration only happens when it reaches the rear side of the target. In our work, the EV, or magnetic monopolar vortex, serves as a stable slow-moving structure in which protons can be captured and gain considerable kinetic energy from the charge separation field associated with the EV. Similarly to collisionless shock acceleration, protons initially at rest can be reflected to twice the EV drift velocity. The mechanism of EV drift in the strongly nonuniform plasma is different from the weakly nonuniform plasma that are mostly studied in the previous works. In order to obtain a deeper insight into the dynamics of EV drift, we perform 2-dimensional (2D) particle-in-cell (PIC) simulations and track the trajectories of a number of electrons that are trapped in the EV. Our results suggest the laser-driven electrons are subject to an E x B drift which drives the collective motion of the vortex structure. Based on this, an analytical model for the vortex velocity is derived in terms of laser and plasma parameters, the prediction of the model agrees well with the PIC simulations. It demonstrates that drift velocity of EV, and therefore the maximum proton energy, can be effectively controlled by the incidence angle of the laser and the plasma density gradient. A representative scenario is studied with 2D PIC simulations—with laser intensity at 10^21 W/cm^2 and incident at 10 degrees—is discussed, in which a quasi-monoenergetic proton beam is obtained with a mean energy 140 MeV and an energy spread of 10%. 3D effects are discussed briefly towards the end of the presentation.

Proceedings Article | 13 June 2017 Presentation

Laser amplifier based on Raman amplification in plasma (Conference Presentation)

Gregory Vieux, Silvia Cipiccia, Nuno R. Lemos, Cristian Ciocarlan, Peter Grant, David Grant, Bernhard Ersfeld, MinSup Hur, Panagiotis Lepipas, Grace Manahan, David Reboredo Gil, Anna Subiel, Gregor Welsh, S. Mark Wiggins, Samuel Yoffe, John Farmer, Constantin Aniculaesei, Enrico Brunetti, Xue Yang, Robert Heathcote, Gagik Nersisyan, Ciaran L. Lewis, Alexander Pukhov, Joāo Mendanha Dias, Dino Jaroszynski

Proceedings Volume 10234, 1023407 (2017) https://doi.org/10.1117/12.2269511

KEYWORDS: Plasma, Raman spectroscopy, Laser applications, Amplifiers, Laser amplifiers, Backscatter, Solid state lasers, Solid state physics

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Proceedings Article | 12 May 2015 Paper

Applicability of the envelope model

J. Farmer, Alexander Pukhov

Proceedings Volume 9509, 95090H (2015) https://doi.org/10.1117/12.2179570

KEYWORDS: Electroluminescent displays, Particles, Plasma, Raman spectroscopy, Pulsed laser operation, Photonic integrated circuits, Laser scattering, Optical simulations, Computer simulations, Neodymium

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Proceedings Article | 7 May 2009 Paper

Coherent Thomson scattering at laser compressed and accelerated electron bunches

D. an der Brügge, A. Pukhov

Proceedings Volume 7359, 735905 (2009) https://doi.org/10.1117/12.820925

KEYWORDS: Laser scattering, Scattering, Thomson scattering, Pulsed laser operation, Doppler effect, Light scattering, Photonic integrated circuits, X-rays, Particles, Electromagnetic scattering

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Proceedings Article | 7 May 2009 Paper

Terahertz radiation from the interaction of laser pulses with gas target

Min Chen, Alexander Pukhov, Xiao-Yu Peng, Oswald Willi, Zheng-Ming Sheng, Jie Zhang

Proceedings Volume 7359, 735912 (2009) https://doi.org/10.1117/12.820345

KEYWORDS: Terahertz radiation, Plasma, Ionization, Pulsed laser operation, Gas lasers, Laser energy, Electrons, Optical simulations, Gases, Photonic integrated circuits

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Proceedings Article | 8 May 2007 Paper

Bringing picosecond CO2 lasers to the forefront of strong-field applications

Igor Pogorelsky, Vitaly Yakimenko, Igor Pavlishin, Peter Shkolnikov, Alexander Pukhov, Tetsuro Kumita, Mikhail Azarov

Proceedings Volume 6346, 63460Z (2007) https://doi.org/10.1117/12.738080

KEYWORDS: Gas lasers, Carbon monoxide, Picosecond phenomena, Electrons, Pulsed laser operation, Laser systems engineering, X-rays, Optical amplifiers, Laser applications, Compton scattering

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Proceedings Article | 7 June 2006 Paper

Terawatt CO₂ laser: a new tool for strong-field research

Igor Pogorelsky, Markus Babzien, Igor Pavlishin, Daniil Stolyarov, Vitaly Yakimenko, Peter Shkolnikov, Alexander Pukhov, Alexei Zhidkov, Victor Platonenko

Proceedings Volume 6261, 626118 (2006) https://doi.org/10.1117/12.667811

KEYWORDS: Gas lasers, Carbon monoxide, Pulsed laser operation, Picosecond phenomena, Ions, Plasma, Electrons, Optical amplifiers, Laser systems engineering, Laser applications

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Proceedings Article | 12 December 2003 Paper

Laser wake field acceleration in bubble regime: quasi-monoenergetic electron bunches and flashes of synchrotron radiation

Alexander Pukhov, S. Kiselev, Igor Kostyukov, Jurgen Meyer-ter-Vehn

Proceedings Volume 5228, (2003) https://doi.org/10.1117/12.536784

KEYWORDS: Pulsed laser operation, Plasma, Synchrotron radiation, Laser scattering, Ions, Electron beams, Photons, Photonic integrated circuits, Optical simulations, Stanford Linear Collider

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Proceedings Article | 21 December 2001 Paper

Intense ion beams accelerated by relativistic laser plasmas

Markus Roth, Thomas Cowan, Jean-Claude Gauthier, Matthew Allen, Patrick Audebert, Abel Blazevic, Julien Fuchs, Matthias Geissel, Manuel Hegelich, S. Karsch, Jurgen Meyer-ter-Vehn, Alexander Pukhov, Theodor Schlegel

Proceedings Volume 4510, (2001) https://doi.org/10.1117/12.451281

KEYWORDS: Plasmas, Ion beams, Gold, Ions, Glasses, Collimation, Target detection, Picosecond phenomena, Spectrometers, Solids

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Showing 5 of 10 publications

Conference Committee Involvement (7)

Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources

27 April 2017 | Prague, Czech Republic

Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources

15 April 2015 | Prague, Czech Republic

Harnessing Relativistic Plasma Waves as Novel Radiation Sources from Terahertz to X-rays and Beyond III

15 April 2013 | Prague, Czech Republic

Research Using Extreme Light: Entering New Frontiers with Petawatt-Class Lasers

15 April 2013 | Prague, Czech Republic

Harnessing Relativistic Plasma Waves as Novel Radiation Sources from Terahertz to X-rays and Beyond

20 April 2011 | Prague, Czech Republic

Showing 5 of 7 Conference Committees

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