Speaker
Description
We numerically investigate high-order harmonic generation (HHG) in a noble gas jet or cell with a supercomputer code [1] which computes the single atom response based on the one-dimensional (1D) time-dependent Schrödinger equation (TDSE) and couples it to the macroscopic propagation of the electromagnetic radiation, thus it enables to compare 1D TDSE-based HHG simulations with experimental results. The corresponding 1D atomic model potential is an important ingredient in this procedure. We defined upgraded 1D atomic model potentials earlier and showed that the agreement of the resulting single atom response with the 3D TDSE results is considerably improved [2, 3].
In this contribution, we show that the upgraded 1D atomic model potentials provide better agreement between the simulated and measured HHG spectra in usual experimental scenarios, e.g. at the ELI user facility.
Funding acknowledgement
Krisztina Sallai was supported by the UNKP-23-3 New National Excellence Program of the Ministry of Human Capacities of Hungary. The ELI ALPS project (GINOP-2.3.6-15-2015-00001) is supported by the European Union and co-financed by the European Regional Development Fund. We acknowledge the Digital Government Development and Project Management Ltd. for awarding us access to the Komondor HPC facility based in Hungary.
References
[1] J. Vábek, T. Němec, S. Skupin, and F. Catoire, arXiv:2507.04115v1
[2] Sz. Majorosi, M. G. Benedict, and A. Czirják, Phys. Rev. A, 98, 023401 (2018).
[3] K. Sallai, Sz. Hack, Sz. Majorosi, and A. Czirják, Phys. Rev. A, 110, 063117 (2024).