A5084127027- Laser-Plasma Interactions and Diagnostics
- Laser-Matter Interactions and Applications
- Laser-induced spectroscopy and plasma
- Advanced X-ray Imaging Techniques
- Astrophysics and Star Formation Studies
- Gamma-ray bursts and supernovae
- Atomic and Molecular Physics
- Laser Design and Applications
- High-pressure geophysics and materials
- Laser Material Processing Techniques
- Gas Dynamics and Kinetic Theory
- Particle Accelerators and Free-Electron Lasers
- Space Satellite Systems and Control
- Astro and Planetary Science
- Diamond and Carbon-based Materials Research
- Particle Dynamics in Fluid Flows
- Particle accelerators and beam dynamics
- Cosmology and Gravitation Theories
- Stellar, planetary, and galactic studies
- Crystallography and Radiation Phenomena
- Solid State Laser Technologies
- Computational Fluid Dynamics and Aerodynamics
- Scientific Research and Discoveries
- Pulsed Power Technology Applications
- Adaptive optics and wavefront sensing
Extreme Light Infrastructure Beamlines
2017-2024
Czech Academy of Sciences, Institute of Physics
2017-2024
Czech Academy of Sciences
2022
Czech Academy of Sciences, Institute of Plasma Physics
2018-2020
Czech Technical University in Prague
2019
Laboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères
2012-2017
Sorbonne Université
2013-2017
Centre National de la Recherche Scientifique
2013-2017
Université Paris Sciences et Lettres
2015-2017
Janssen (France)
2014-2015
We show the laser-driven acceleration of unprecedented, collimated (2 mrad divergence), and quasi-monoenergetic (25% energy spread) electron beams with up to 50 MeV at 1 kHz repetition rate. The laser driver is a multi-cycle (15 fs) optical parametric chirped pulse amplification system, operating 26 mJ (1.7 TW). scalability technology reported in this work pave way toward developing high-brilliance x-ray sources for medical imaging innovative devices brain cancer treatment represent step...
The P3 installation of ELI-Beamlines is conceived as an experimental platform for multiple high-repetition-rate laser beams spanning time scales from femtosecond via picosecond to nanosecond. upcoming L4n beamline will provide shaped nanosecond pulses up 1.9 kJ at a maximum repetition rate 1 shot/min. This unique possibilities high-pressure, high-energy-density physics, warm dense matter, and laser–plasma interaction experiments. Owing the high rate, it become possible obtain considerable...
Betatron x-ray sources from laser-plasma accelerators reproduce the principle of a synchrotron at millimeter scale. They combine compactness, femtosecond pulse duration, broadband spectrum, and micron source size. However, when produced with terawatt class lasers, their energy flux are not sufficient to compete sources, thus limiting dissemination its possible applications. Here we present simple method enhance betatron without increasing laser energy. The orbits relativistic electrons...
We present new experiments to study the formation of radiative shocks and interaction between two counterpropagating shocks. The are performed at Orion laser facility, which is used drive in xenon inside large aspect ratio gas cells. collision their respective precursors, combined with inherently three-dimensional shocks, provides a novel platform particularly suited for benchmarking numerical codes. dynamics before after investigated using point-projection x-ray backlighting while,...
We review the results obtained in several experimental campaigns with INRS high-power laser system and determine X-ray emission scaling from synchrotron radiation produced during wakefield acceleration (LWFA) of electrons. The physical processes affecting generation intense stable beams propagation phase high-intensity ultrashort pulse gas jet target are discussed. successfully a relativistic through self-guiding on length larger than dephasing depletion lengths, generating very hard X-rays...
The latest advances in petawatt laser technology within the ELI Beamlines project have stimulated development of large surface area dielectrically coated mirrors meeting all demanding requirements for guiding compressed 30 J, 25 fs HAPLS beam at 10 Hz repetition rate and a center wavelength 810 nm entirely vacuum. We describe production evaluation Ta2O5/HfO2/SiO2 ion sputtered (440 × 290 75) mm3 transport mirrors. No crazing was observed after thirty vacuum-air cycles. A induced damage...
The realization of compact X-ray sources is one the most intriguing applications laser-plasma based electron acceleration. These on oscillation short micron-sized bunches relativistic electrons provide femtosecond pulses that are collimated, bright, and partially coherent. state-of-the-art laser plasma can photon flux over 1011 photons/shot. further be enhanced with availability high repetition rate, high-power lasers, providing capacities complementary to large scale facilities such as...
The interaction of intense laser pulses with plasma mirrors has demonstrated the ability to generate high-order harmonics, producing a bright source extreme ultraviolet (XUV) radiation and attosecond pulses. Here, we report an unexpected transition in this process. We show that loss spatiotemporal coherence reflected high harmonics can lead new regime highly efficient coherent XUV generation, extraordinary property where is directionally anomalous, propagating parallel mirror surface. With...
Abstract We report on the design and first results from experiments looking at formation of radiative shocks Shenguang-II (SG-II) laser Shanghai Institute Optics Fine Mechanics in China. Laser-heating a two-layer CH/CH–Br foil drives $\sim 40$ km/s shock inside gas cell filled with argon an initial pressure 1 bar. The use gas-cell targets large (several millimetres) lateral axial extent allows to propagate freely without any wall interactions, permits field view image single colliding...
A new optical probing method with increased interferometric sensitivity for a low-density gas jet characterization is presented. The proposed technique employs Michelson interferometer self-imaging object arm, which enables the relay imaging of on itself, and in this way, phase device by double propagation laser beam through jet. wavelength 405 nm was chosen to further increase increasing probe wavenumber. argon various backing pressures characterized our commonly used Mach-Zehnder setup...
X-ray radiation from laser wakefield accelerated (LWFA) electrons provides a collimated broadband femtosecond x-ray source with micron-scale size. However, the photon flux is still inadequate for range of applications. By interaction LWFA relativistic second and third harmonic driving wakefield, we report more than an order magnitude enhancement emitted by undergoing betatron oscillations resonant harmonics. This phenomenon demonstrated analytical numerical models, as well particle-in-cell...
The emergence of petawatt lasers focused to relativistic intensities enables all-optical laboratory generation intense magnetic fields in plasmas, which are great interest due their ubiquity astrophysical phenomena. In this work, we study spatially extended and long-lived fields. We show that such fields, scaling up the gigagauss range, can be generated by interaction laser pulses with relativistically underdense plasma. With three-dimensional particle-in-cell simulations investigate...
We show the laser-driven acceleration of unprecedented, collimated (2 mrad) and quasi-monoenergetic (dE/E = 25%) electron beams with energy up to 50 MeV at 1 kHz repetition rate. The laser driver is a multi-cycle (15 fs) OPCPA system, operating 26 mJ (1.7 TW). scalability technology reported in this work pave way towards developing high brilliance X-ray sources for medical imaging, innovative devices brain cancer treatment represent step forward realization GeV beamline.
We present results from new experiments to study the dynamics of radiative shocks, reverse shocks and precursors. Laser ablation a solid piston by Orion high-power laser at AWE Aldermaston UK was used drive into gas cell initially pressurised between $0.1$ $1.0 \ bar$ with different noble gases. Shocks propagated {$80 \pm 10 km/s$} experienced strong cooling resulting in post-shock compressions { $\times 25 2$}. A combination X-ray backlighting, optical self-emission streak imaging...
Modeling of the trajectories VLBI components ejected by nucleus 1928+738 shows jet contains three families trajectories, i.e. are from different origins. The fit C1, C6 and C8 indicates that two binary black hole systems. first system is associated with stationary Cg CS characterized a radius $R_{bin,1} \approx 0.220$ mas; both holes quasi regularly between 1990 2010. second not $R_{bin,2} 0.140$ it only 1994 1999. sytems separated $\approx 1.35$ mas. We briefly discuss consequences...
In a plasma wakefield accelerator, an intense laser pulse propagates in under-dense that drives relativistic wave which electrons can be injected and accelerated to energies within short distance. These undergo betatron oscillation emit collimated X-ray beam along the direction of electron velocity. This source is characterised with size order micrometer, duration femtosecond, high spectral brightness. novel provides excellent imaging tool achieve unprecedented high-resolution image through...
Abstract Laser wakefield acceleration has proven to be an excellent source of electrons and X-rays suitable for ultra-fast probing matter. These novel beams have demonstrated unprecedented spatial temporal resolution allowing new discoveries in material science plasma physics. In particular, the study dynamic processes such as non-thermal melt lattice changes on femtosecond time-scales paved a way completely scientific horizons. Here, we demonstrate first single-shot electron radiography...
Three main paths are being developed within the ELI research program for transforming driving laser pulses into bursts of bright short wavelength radiation: high-order harmonic generation in gases, plasma X-ray sources and based on relativistic electron beams accelerated plasma. For each these areas, dedicated beamlines built to provide a unique combination scientific community. The application has well-defined balance between fundamental science applications different fields technology....
Abstract Optical probing is an indispensable tool in research and development. In fact, it has always been the most natural way for humankind to explore nature. However, objects consisting of transparent materials with a refractive index close unity, such as low-density gas jets, are typical example samples that often reach sensitivity limits optical techniques. We introduce advanced method employing multiple passes probe through object increase phase sensitivity, relay-imaging between...