Dr. Alexander Molodozhentsev Profile

Dr. Alexander Molodozhentsev

at ELI Beamlines

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Author

Publications (5)

Proceedings Article | 8 June 2023 Paper

Compact undulator-based soft x-ray radiation source at ELI Beamlines: user-oriented program

Eugene Vishnyakov, Dong Du Mai, Jonathan Green, Alamgir Mondal, Alexandr Jančárek, Petr Zimmermann, Sebastian Niekrasz, Srimanta Maity, Alexander Yu. Molodozhentsev

Proceedings Volume 12582, 1258209 (2023) https://doi.org/10.1117/12.2665377

KEYWORDS: X-rays, Extreme ultraviolet, Vacuum chambers, Laser radiation, Optical coherence, Free electron lasers, Electron beams, Mirrors, Coherence imaging

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Proceedings Article | 18 April 2021 Presentation

Laser-driven compact free electron laser: from extreme ultraviolet radiation to x-rays

Alexander Molodozhentsev, Konstantin Kruchinin, Gabriele Grittani, Tyler Green, Jaroslav Nejdl, Dong-Du Mai, Sergei Bulanov, Georg Korn

Proceedings Volume 11777, 117770N (2021) https://doi.org/10.1117/12.2591994

KEYWORDS: Free electron lasers, X-rays, Extreme ultraviolet, Ultraviolet radiation, Laser applications, High power lasers, Electron beams

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Proceedings Article | 14 May 2019 Presentation

Laser-driven secondary sources of X-rays and particles at ELI Beamlines (Conference Presentation)

Georg Korn, Sergei Bulanov, Daniele Margarone, Jaroslav Nejdl, Alexander Molodozhentsev, Tadzio Levato, Bedrich Rus, Pavel Bakule

Proceedings Volume 11039, 110390L (2019) https://doi.org/10.1117/12.2525332

KEYWORDS: Particles, X-rays, X-ray sources, Electrons, Semiconductor lasers, Diodes, Pulsed laser operation, Laser applications, Laser scattering, High power lasers

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We will be giving an overview on the development of the “ELI-beamline facility” being currently implemented and opened as a user facility within the Extreme Light Infrastructure (ELI) project based on the European ESFRI (European Strategy Forum on Research Infrastructures) process. ELI-Beamlines is the high-energy, repetition-rate laser pillar of the ELI (Extreme Light Infrastructure) project. The main objective of the ELI-Beamlines facility is the delivery of ultra-intense high-energy pulses for high field experiments and the generation and applications of high-brightness X-ray sources and accelerated particles. The high power laser systems currently prepared and used for the generation of higher repetition rate sources of x-rays and particles are L1 (Allegra) a 1 kHz diode pumped laser produced sub-20fs OPCPA system and the L3 (HAPLS) a 10 Hz, 1 PW (30fs) laser using as the active medium Ti:sapphire with new gas cooled diode pumped Nd doped Glass pump laser. The lasers will be able to provide focused intensities attaining >1018-21 Wcm-2 suitable for generation of x-rays and particles (electrons and ions). We will discuss the infrastructure concerning the availability of experimental areas, including secondary sources of particles and x-rays in the wavelength range between 20 eV-100 keV and few Mev and their practical implementation at the ELI-Beamline user facility. The sources are either based on direct interaction of the laser beams with gaseous targets (high order harmonics) or will first accelerate electrons which then will interact with laser produced wigglers (Betatron radiation) or directly injected into undulators (laser driven LUX or later X-FEL). The direct interaction (collision) of laser accelerated electrons with the intense focused laser again will lead to short pulse high energy radiation via Compton or Thomson scattering for different applications opening also the route to fundamental physics investigations in high intensity interaction due to the 4 gamma 2 Lorentz boost of the intensity seen by high energy (GeV- > 106) electrons.

Proceedings Article | 24 April 2019 Paper

Development of a new generation FEL based on LWFA at ELI Beamlines

Konstantin Kruchinin, Alexander Molodozhentsev, Jonathan Green, Joshua Hawke, Dariusz Kocon, Maninder Kaur, Andreas Maier, Florian Grüner, Georg Korn

Proceedings Volume 11039, 110390R (2019) https://doi.org/10.1117/12.2526323

KEYWORDS: Electron beams, Free electron lasers, Plasma, Photons, Pulsed laser operation, Capillaries, X-rays, Laser applications, Laser development, Laser systems engineering

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Proceedings Article | 7 May 2017 Paper

Requirements on the LWFA electron beam for the user-oriented photon source

Alexander Molodozhentsev, Lukáš Přibyl, Georg Korn, Paul Winkler, Andreas Maier

Proceedings Volume 10240, 1024015 (2017) https://doi.org/10.1117/12.2265577

KEYWORDS: Energy efficiency, Plasma, Beam propagation method, Laser beam propagation, Pulsed laser operation, Chromatic aberrations, Electron beams, Free electron lasers, Femtosecond phenomena, Particles

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