https://doi.org/10.1140/epjd/s10053-026-01142-x
Research - Plasmas
Far-field radiation from laser-driven plasmas and electron beams: a time-domain approach
Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Center for Intense Laser Application Technology, and College of Engineering Physics, Shenzhen Technology University, 518118, Shenzhen, China
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Received:
15
December
2025
Accepted:
3
March
2026
Published online:
30
March
2026
Abstract
Intense laser pulses serve as a powerful tool for generating broadband secondary radiation, spanning terahertz to gamma-ray frequencies. These sources find wide applications in cosmology, chemistry, biomedical science, and beyond. A far-field time-domain radiation calculation code (FaTiDo) is developed based on the Liénard–Wiechert potential, which can calculate the collective radiation with the information of the relativistic macro-electrons in the particle-in-cell (PIC) simulation. It has several advantages over PIC in simulating radiation. Here, we show three cases of radiation simulation using FaTiDo, including: terahertz radiation production through laser interaction with positive-gradient plasma, gamma-ray generation via inverse nonlinear Thomson scattering, and high-order harmonic generation via the plasma mirror mechanism. New phenomena are found with this new code. Our code introduces a novel method for electron beam and plasma radiation simulation, which may offer unique benefits for certain radiation research.
Supplementary Information The online version contains supplementary material available at https://doi.org/10.1140/epjd/s10053-026-01142-x.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2026
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
