A5024927662- Laser-Plasma Interactions and Diagnostics
- Laser-induced spectroscopy and plasma
- Laser-Matter Interactions and Applications
- Laser Design and Applications
- Atomic and Molecular Physics
- Advanced Fiber Laser Technologies
- Advanced X-ray Imaging Techniques
- Particle Accelerators and Free-Electron Lasers
- Ion-surface interactions and analysis
- Magnetic confinement fusion research
- Particle accelerators and beam dynamics
- Laser Material Processing Techniques
- Mass Spectrometry Techniques and Applications
- Advanced Optical Sensing Technologies
- Advanced Electron Microscopy Techniques and Applications
- Nuclear Physics and Applications
- Photonic Crystal and Fiber Optics
- Solid State Laser Technologies
- Healthcare Technology and Patient Monitoring
- Cold Atom Physics and Bose-Einstein Condensates
- Geophysics and Sensor Technology
- Optical Systems and Laser Technology
- Advanced Frequency and Time Standards
- Electron and X-Ray Spectroscopy Techniques
- Orbital Angular Momentum in Optics
ELI-HU Research and Development Non-Profit
2021-2024
Czech Academy of Sciences, Institute of Physics
2014-2021
Spanish Center for Pulsed Lasers
2019-2020
Universidad de Salamanca
2020
Czech Technical University in Prague
2015-2018
Czech Academy of Sciences
2015-2016
Czech Academy of Sciences, Institute of Plasma Physics
2014-2015
University of Salento
2013
Ospedali Riuniti di Ancona
2006
Deutsche Telekom (Spain)
1996
A number of laser facilities coming online all over the world promise capability high-power experiments with shot repetition rates between 1 and 10 Hz. Target availability technical issues related to interaction environment could become a bottleneck for exploitation such facilities. In this paper, we report on target needs three different classes experiments: dynamic compression physics, electron transport isochoric heating, laser-driven particle radiation sources. We also review some most...
This paper provides an up-to-date review of the problems related to generation, detection and mitigation strong electromagnetic pulses created in interaction high-power, high-energy laser with different types solid targets. It includes new experimental data obtained independently at several international laboratories. The mechanisms field generation are analyzed considered as a function intensity spectral range emissions they produce. major emphasis is put on GHz frequency domain, which most...
Generating pure proton beams using lasers for novel cancer therapies has long challenged researchers. In a new experiment, scientists irradiate thin hydrogen ribbon with high-power laser to generate large and population of protons.
Advancements in light engineering have led to the creation of pulsed laser sources capable delivering high-repetition-rate, high-power few-cycle pulses across a wide spectral range, enabling exploration many fascinating nonlinear processes occurring all states matter. High-harmonic generation, one such process, which converts low-frequency photons driver field into soft x-rays, has revolutionized atomic, molecular, and optical physics, leading progress attosecond science ultrafast...
Measurements of the return-current flowing through a solid target irradiated with sub-nanosecond kJ-class Prague Asterix Laser System is reported. A new inductive probe was developed which allows us measuring current derivative in kA/ns range. The dependences on laser pulse energy for cooper, graphite, and polyethylene targets are experiment shows that proportional to deposited strongly affected by shot-to-shot fluctuations. corresponding maximum charge exceeded value 10 μC. dependence...
The current balancing the target charging and emission of transient electromagnetic pulses (EMP) driven by interaction a focused 1.315 μm iodine 300 ps PALS laser with metallic plastic targets were measured use inductive probes. It is experimentally proven that duration return currents EMPs much longer than laser-target interaction. laser-produced plasma active after During this phase, acts as virtual cathode plasma-target interface expands. A double exponential function used in order to...
About 50 years ago, Sarachick and Schappert [Phys. Rev. D. 1, 2738 (1970)] showed that relativistic Thomson scattering leads to wavelength shifts are proportional the laser intensity. 28 later Chen et al. [Nature 396, 653 (1998)] used these estimate their intensity near 10^18 W/cm^2. More recently there have been several theoretical studies aimed at exploiting nonlinear as a tool for direct measurement of intensities well into regime. We present first quantitative study this approach between...
We present the experimental realization of spectrally tunable, ultrashort, quasi-monochromatic extreme ultraviolet (XUV) pulses generated at 100 kHz repetition rate in a user-oriented gas high harmonic generation beamline Extreme Light Infrastructure—Attosecond Pulse Source facility. Versatile spectral and temporal shaping XUV is accomplished with double-grating, time-delay compensated monochromator accommodating two composing stages novel, asymmetrical geometry. This configuration supports...
The electromagnetic pulses (EMPs) generated during the interaction of a focused 1.315-μm sub-nanosecond laser pulse with solid hydrogen ribbon were measured. strength and temporal characteristics EMPs found to be dependent on target density. If low density is ionized laser, plasma does not physically touch holder, EMP weaker in shorter time duration. It shown that H2 experiment, strongly affect response fast electronic devices. measurements carried out by Rohde&Schwarz B-Probes,...
We present a scintillator-based detector able to measure the proton energy and spatial distribution with relatively simple design. It has been designed built at Spanish Center for Pulsed Lasers (CLPU) in Salamanca tested accelerator Centro de Micro-Análisis Materiales (CMAM) Madrid. The is capable of being set high repetition rate (HRR) mode reproduces performance radiochromic film detector. represents new class online detectors laser–plasma physics experiments newly emerging power laser...
A target irradiated with a high power laser pulse, blows off large amount of charge and as consequence the itself becomes generator electromagnetic pulses (EMP) owing to return current flowing ground through holder. The first measurement magnetic field induced by neutralizing reaching value few kA was performed use an inductive probe at PALS Laser Facility (Cikhardt et al. Rev. Sci. Instrum. 85 (2014) 103507). full description EMP generation should contain information on spatial distribution...
We describe the characterization of electromagnetic pulses (EMPs) in experiments on solid targets at PALS laser facility Prague, for energy up to 600 J and intensity 1016 W cm−2 focus. Measurements EMPs have been performed by different conductive probes placed inside outside experimental chamber. show results probe configurations, illustrate effects spurious direct coupling these transient fields with read-out apparatus, which are important high-energy high-intensity laser-plasma...
We describe the radiofrequency emission taking place when 300 ps laser pulses irradiate various solid targets with an intensity of 1016 W/cm2. The intense electromagnetic was observed outside target chamber by two loop antennas up to 1 GHz. Electromagnetic can be 800 MHz transients, which decay from a peak field E0 ≊ 7 kV/m and H0 15 A/m. occurrence these is associated generation hard x-rays photon energies extending beyond MeV. This contribution reports first observation this effect at PALS...
Abstract Recent advances on laser technology have enabled the generation of ultrashort (fs) high power (PW) systems. For such large scale facilities there is an imperative demand for repetition rate operation in symbiosis with beamlines or end-stations. In extreme conditions electromagnetic pulses (EMP) during intense target interaction experiments can tip good outcome campaign. The EMP effects are several including interference diagnostic devices and actuators as well damage electrical...
We generate high-order harmonics in gaseous medium with tunable photon energy using time domain interferometry of double pulses a non-collinear generation geometry. The method is based on the fact that generated inherit certain spectral properties driving laser. two temporally delayed ultrashort laser pulses, identical all parameters, are produced by custom-made split-and-delay unit utilizing wave front splitting without significant loss. arrangement easy to implement any attosecond pulse...
Abstract The interaction of an intense laser pulse with a solid target produces large number fast free electrons. This emission gives rise to two distinct sources the electromagnetic (EMP): pulsed return current through holder and outflow electrons into vacuum. A relation between characteristics laser-produced plasma, EMP are presented in case massive Au irradiated intensity up 3 × 10 16 W/cm 2 . was recorded using 12 cm diameter Moebius loop antennas, measured new type inductive probe...
We have investigated the Auger-electron diffraction (AED) of ${\mathit{L}}_{2,3}$VV Auger line clean 7\ifmmode\times\else\texttimes\fi{}7 reconstructed Si(111) surface and Ge/Si interface formed after a few monolayers (ML) Ge deposition. The experimental AED in low kinetic-energy regime has been interpreted within framework multiple-scattering theory. comparison data taken using both x-ray source an electron evidences that incident beam plays negligible role when conditions require use...
Electrosurgery refers to the passage of a high-frequency, high-voltage electrical current through body achieve desired surgical effects. At same time, these procedures are accompanied by general increase electromagnetic field in an operating room that may expose both patients and personnel relatively high levels radiofrequency radiation. In first part this study, we have taken into account radiation emitted different monopolar electrosurgical devices, evaluating strength delivered handle...
Intense electromagnetic pulses (EMPs) accompany the production of plasma when a high-intensity laser irradiates solid target. The EMP occurs both during and long after end pulse (up to hundreds nanoseconds) within outside interaction chamber, interferes with nearby electronics, which may lead disruption or malfunction diagnostic devices. This contribution reports correlation between frequency spectrum distortion Thomson parabola tracks protons observed at kJ-class PALS facility in Prague....
A coil-capacitor target is modeled using FEM simulations and analytical calculations, which allow to explain the time evolution of such complex during magnetic field production driven by flow an extremely high current generated through interaction with a power laser. The numerical model includes detailed study produced target, both in static transient cases, as well force Joule heating. validated experimental data reported literature can be interest for several applications. As example,...
We present the design and implementation of a new, modular gas target suitable for high-order harmonic generation using high average power lasers. To ensure thermal stability in this heat load environment, we implement an appropriate liquid cooling system. The system can be used multiple-cell configurations allowing to control cell length aperture size. was optimized with flow simulations characteristics, vacuum compatibility medium properties. Finally, experimentally validated by conducting...
Recent experiments at the laser facility PALS focused on driven fusion of deuterons are reviewed. They benefit high reaction cross-sections and a number multi-MeV from thick CD2 targets irradiated by intensity 3× 1016 W cm−2. In reported fast neutrons with energy up to 16 MeV were produced through 7Li(d, n)8Be 11B(d, n)12C reactions in pitcher-catcher target configuration. When using large area foil as secondary catcher total maximum neutron yield 2H(d, n)3He increased factor about 5, 4× 108...