How to optimize high-order harmonic generation in gases

R Weissenbilder, S Carlström, L Rego, C Guo… - Nature Reviews …, 2022 - nature.com
High-order harmonic generation (HHG) in gases leads to short-pulse extreme ultraviolet
(XUV) radiation that is useful in a number of applications, such as attosecond science and …

Attosecond investigation of extreme-ultraviolet multi-photon multi-electron ionization

M Kretschmar, A Hadjipittas, B Major, J Tümmler, I Will… - Optica, 2022 - opg.optica.org
Multi-electron dynamics in atoms and molecules very often occur on sub-to few-femtosecond
time scales. The available intensities of extreme-ultraviolet (XUV) attosecond pulses have …

Highly non-linear ionization of atoms induced by intense high-harmonic pulses

B Senfftleben, M Kretschmar, A Hoffmann… - Journal of Physics …, 2020 - iopscience.iop.org
Intense extreme-ultraviolet (XUV) pulses enable the investigation of XUV-induced non-linear
processes and are a prerequisite for the development of attosecond pump-attosecond probe …

Compact intense extreme-ultraviolet source

B Major, O Ghafur, K Kovács, K Varjú, V Tosa… - Optica, 2021 - opg.optica.org
High-intensity laser pulses covering the ultraviolet to terahertz spectral regions are
nowadays routinely generated in a large number of laboratories. In contrast, intense extreme …

Thin-disk laser-pumped OPCPA system delivering 4.4 TW few-cycle pulses

M Kretschmar, J Tuemmler, B Schütte, A Hoffmann… - Optics …, 2020 - opg.optica.org
We present an optical parametric chirped pulse amplification (OPCPA) system delivering 4.4
TW pulses centered at 810 nm with a sub-9 fs duration and a carrier-envelope phase …

[HTML][HTML] High-flux 100 kHz attosecond pulse source driven by a high-average power annular laser beam

P Ye, LG Oldal, T Csizmadia, Z Filus, T Grósz… - Ultrafast …, 2022 - spj.science.org
High-repetition rate attosecond pulse sources are indispensable tools for time-resolved
studies of electron dynamics, such as coincidence spectroscopy and experiments with high …

High power, high repetition rate laser-based sources for attosecond science

FJ Furch, T Witting, M Osolodkov, F Schell… - Journal of Physics …, 2022 - iopscience.iop.org
Within the last two decades attosecond science has been established as a novel research
field providing insights into the ultrafast electron dynamics that follows a photoexcitation or …

High-order harmonic generation in a strongly overdriven regime

B Major, K Kovács, E Svirplys, M Anus, O Ghafur… - Physical Review A, 2023 - APS
High-order harmonic generation (HHG) normally requires a careful adjustment of the driving
laser intensity (typically 10 14–10 15 W/cm 2) and gas medium parameters to obtain a …

Extended model for optimizing high-order harmonic generation in absorbing gases

B Major, K Varjú - Journal of Physics B: Atomic, Molecular and …, 2022 - iopscience.iop.org
We report on an extended version of the one-dimensional model proposed by Constant et al
(1999 Phys. Rev. Lett. 82 1668) to study phase matching of high-order harmonic generation …

High Harmonic Generation near the Low-Frequency Edge of a Plateau under Nonlinear Propagation of 1.24-μm Near-Infrared Femtosecond Laser Radiation in a …

BV Rumiantsev, AV Pushkin, FV Potemkin - JETP Letters, 2023 - Springer
High (15–25) harmonic generation in the vacuum ultraviolet spectral range (83–50 nm) has
been realized by focused (NA= 0.033) near-infrared femtosecond laser radiation …