A5058263360- Laser-Matter Interactions and Applications
- Laser-Plasma Interactions and Diagnostics
- Advanced Fiber Laser Technologies
- Laser Design and Applications
- Solid State Laser Technologies
- Laser-induced spectroscopy and plasma
- Optical Systems and Laser Technology
- Mitochondrial Function and Pathology
- Mass Spectrometry Techniques and Applications
- Metabolism and Genetic Disorders
- Cardiac Ischemia and Reperfusion
- Toxin Mechanisms and Immunotoxins
- Viral Infectious Diseases and Gene Expression in Insects
- Planetary Science and Exploration
- GaN-based semiconductor devices and materials
- Spectroscopy and Laser Applications
- Pulmonary Hypertension Research and Treatments
- Calibration and Measurement Techniques
- Nuclear Physics and Applications
- Food Quality and Safety Studies
- Diet and metabolism studies
- Adaptive optics and wavefront sensing
- ATP Synthase and ATPases Research
- Glycogen Storage Diseases and Myoclonus
- Pulsed Power Technology Applications
University of Pecs
2022-2024
ELI-HU Research and Development Non-Profit
2017-2023
University of Szeged
1991-2022
Abstract The extreme light infrastructure attosecond pulse source offers beamtime for users of various and particle sources driven by versatile laser systems. Here we report on the state art a few-cycle, multi-TW, 1kHz repetition rate system, now fully operational in facility. system is based four stages optical parametric amplifiers (OPAs) pumped total 320mJ, 80ps frequency-doubled Nd:YAG pulses. All OPA utilize double crystal configuration, which design has been also confirmed model...
Post-compression of 12-fs laser pulses with multi-TW peak power from an optical parametric chirped pulse amplification (OPCPA) system was performed by using a single thin fused silica plate in vacuum. By optimizing the input both spatial and temporal domains, after compression customized mirrors, we achieved as short 3.87 fs, combination 12-mJ energy. The spatio-spectral quality post-compressed thoroughly analyzed. generated 1.4-cycle pave way for next generation attosecond particle...
Ion acceleration resulting from the interaction of 11 fs laser pulses ~35 mJ energy with ultrahigh contrast (<10^-10), and 10^19 W/cm^2 peak intensity foil targets made various materials thicknesses at normal (0-degree) 45-degree incidence is investigated. The maximum protons accelerated both rear front sides target was above 1 MeV. A conversion efficiency pulse to proton beam estimated be as high ~1.4 % using a 51 nm-thick Al target. excellent indicates predominance vacuum heating via...
Output pulses of a 100 kHz mid-infrared OPCPA system are post-compressed from 4.7 cycles down to 2.3 by using combination dielectric and semiconductor crystal in hybrid thin plate setup. Efficient spectral broadening is demonstrated with 11 W average input power. After compression the output power reached 6.8 exceptional CEP energy stability for several hours. The were carefully characterized both temporal spatial domains, resulting 2.3-cycle duration at 3.1 μm central wavelength Strehl...
The scheme of cascaded extraction optical parametric amplifier (CE-OPA) has been proposed as a final for high peak power laser systems. 4D numerical simulations show that conversion efficiency CE-OPA system pumped with temporal Gaussian pump pulse is close to the theoretical limit quantum conventional OPA flat-top pulse. also similar in output energy stability and alignment sensitivity phase-matching angles, too. However, use scheme, requirement shaping can be relaxed, leading an overall...
This paper presents a single-shot technique for measuring CEP. The Temporal dispersion based One-shot Ultrafast Carrier envelope phase Analysis method (TOUCAN) is an arbitrary repetition rate CEP drift measurement on dispersive Fourier transformations and has been experimentally tested at 100 kHz. TOUCAN was validated by direct comparison of decimated data with independent traditional technique. impact temporal jitter the investigated new mitigation shown to produce high accuracy jitter-free...
The calibration of an ion detection system was carried out for protons and carbon ions from a few tens keV up to about 1 MeV energies. A Thomson spectrometer deflecting the particle beam accelerated laser plasma creates spectra on phosphor screen behind micro-channel plate (MCP), which are recorded by camera. During calibration, simultaneously hit slotted CR-39 track detector installed in front MCP and, passing through adjacent stripes, MCP. provides ratio interpolated values between two...
In this theoretical work, the performances of ultrafast, carrier-envelope-phase-stable (CEP), mid-IR optical parametric chirped pulse amplification (OPCPA) systems were compared in two different schemes. "idler scheme" (idler) is produced first difference frequency generation stage OPCPA chain and then amplified following stages. "signal scheme," supercontinuum seed generated last amplifier stage. According to our results, idler has higher energy better stability scheme, while signal scheme...
Abstract Introduction Pulmonary arterial hypertension (PAH) is a cardiovascular disease that characterized by severe structural and functional damages, resulting from the obstructive remodeling of pulmonary vasculature consequent right ventricular pressure overload. The current therapy mainly focuses on vascular system, with uncertain efficacy. Therefore, it crucial to explore new therapeutic approaches. mechanism colchicine complex not-fully understood, but has been proven exert...
We experimentally studied the formation of CH(A) radicals in butane seeded plasma generated with chirp-controlled ultrashort laser pulses (\(\sim 760 \, \mu \text{J}/\text{pulse}\), 890 nm, 1 kHz, 8 fs). The focused beam high peak intensity 10^{14} - 10^{16} \text{W/cm}^2\)) caused Coulomb explosion (CE). time dependent emission spectra were observed Fourier-transform Visible spectroscopy (FTVis) step-scan method. average signal decreased chirp Ar\(^+\) > C\(_2\) H-\(\alpha\) \(\sim\) order...
Mitochondria form a dynamic network in cells, regulated by the balance between mitochondrial fusion and fission. The inhibition of fission can have positive effects acute ischemic/reperfusion injury models preventing fall membrane potential associated with processes. However, chronic is disadvantageous because it obstructs elimination damaged fragments. OPA1, view previous results, possible therapeutic target as promoter structure stabilizer protein. We used transgenic mice which OMA1...
Most of the laser sources ELI-ALPS are operating in 100 W average power regime, while peak and repetition rate range from 0.1 TW at kHz up to PW 10 Hz. The pulse duration lasts typically a few optical cycle, feeding six attosecond beamlines, two particle THz as well many end stations associated with beamlines [1]. first lasers have been installed by 2017, became available for experiments beginning 2018. Mid-InfraRed (MIR) provides 150 µJ, 40 fs pulses 3.1µm [2]. High-Repetition (HR1) has...
High repetition rate target systems are inevitable to exploit fully the capabilities recent high average power peak laser [1]. The special requirements of such [2] calling for frequent experimental testing with appropriate sources. Ultrashort pulse operational in large scale facilities like ELI -ALPS [3] heavily booked secondary source developments and user experiments. Here we present a versatile system, which is ideal development systems. One arm system capable provide pulses tens ofmI...
The development of laser plasma accelerators has been centred around the optimisation particle yield resulting from interaction high energy, single-shot lasers with very low average power. Here we aim at already existing, power kHz repetition rate but pulse energy. In our experiment, SEA ELI-ALPS provided ultrahigh contrast pulses 12fs duration and 20mJ energy on 200 nm thick dPE foils. A rotating wheel target system allowed run 1 Hz in bursts 75 shots. accelerated deuterons, measured by...
ELI-ALPS in Hungary, one of the three pillars Extreme Light Infrastructure, aims at providing diverse light sources, including energetic attosecond pulses highest possible repetition rates. One main laser systems for driving plasma and gas-based HHG stages, is a state-of-the-art 1 kHz few-cycle called SYLOS. Targeted pulse parameters are an energy 100 mJ duration shorter than two optical cycles (<6 fs), with outstanding energy, phase pointing stability as well high spatiotemporal quality....
The effectiveness of the proposed design is demonstrated by a 4D numerical simulation and compared to conventional OPCPA. According results 10% higher conversion efficiency increased energy stability predicted in CE-OPA.
We investigate nonlinear crystal type multiplexing as means of increasing the bandwidth a parametric amplification system pumped at 532nm. Experimental results and numerical simulations indicate that sub-2 cycle pulse durations multi-mJ energies will be possible using BBO LBO.
Abstract Introduction Mitochondria forms a dynamic network in cells, which is regulated by the balance between mitochondrial fusion and fission. The inhibition of fission could result positive effects acute ischemic/reperfusion injury models, due to prevention membrane potential fall that goes along with processes. However, chronic models disadvantageous because it obstructs elimination damaged fragments. OPA1 – view previous results possible therapy target, as promoter structure stabilizer...
Results of the post-compression SYLOS lasers to single-cycle regime are presented with unprecedentedly high 1.1 TW 2.7 input peak power. Spatial filtering pulses and by utilizing a single thin fused silica plate as nonlinear medium allowed us reach well compressed 1.4- 1.8-cycle at 10 Hz 1 kHz repetition rates starting from 12 fs 7.5 durations, respectively. Spatio-spectral temporal characterization confirmed their quality. The >3 will be used for ion acceleration neutron generation experiments.
Simulation strategy on efficiently combining 3+1D and 1+1D numerical simulations of high energy pulse post-compression in multiple thin plate compressor. While the main part optimization takes place 1D space, final result describes electric field spatio-temporal effected by third order nonlinearity, Raman-scattering, ionization linear dispersion. The technique is compared to an experimental where single cycle regime was reached, validation showed accuracy. This method enables further for...
High peak power few-to-single-cycle pulses are challenging to achieve in the normal dispersion regime, hence it was demonstrated only a very few cases above 10 mJ energy level by using thin plate technique [1], [2], where greatest challenge is control of spatio-temporal couplings (STCs). Devices capable measure such properties ultrashort now available [3]–[5], however they spectrally limited their detectors. Numerical simulations offer an efficient way predict possible STCs for these...
Shortening the pulse duration of high peak power laser pulses to single-cycle regime is very challenging due damage threshold limitations optical elements and spatio-temporal distortions spatial intensity modulations input beam. Pulses as short 10 fs have been already obtained with 100 TW-class by using multiple thin plate technique [1]. On other hand, multi mJ energy only achieved via use stretched hollow-core fiber method [2].
First results of the post-compression experiments with SYLOS 2 laser system are presented, where a single thin plate spectral broadening stage is utilized. Spectrally broadened pulses 16 mJ output energy obtained, dispersion compensation custom chirped mirrors and fused silica in 4.75 fs temporal duration.
This manuscript presents the most recent upgrades made on SYLOS2 laser system in ELI-ALPS1. These modifications were done based feedback from experimental end-stations during last 3 years. First, long virtual propagation of super-Gaussian output beam reduced by modifying imaging telescope after amplification stages, which significantly improved profile hindered propagation-related diffraction pattern. The optical parametric chirped pulse (OPCPA) stages equipped with new nonlinear crystals...