https://doi.org/10.1140/epjp/s13360-023-03962-x
Regular Article
Application of quantum-orbit theory to atomic processes in strong tailored laser fields and terahertz pulses
1
Faculty of Science, University of Sarajevo, Zmaja od Bosne 35, 71000, Sarajevo, Bosnia and Herzegovina
2
Academy of Sciences and Arts of Bosnia and Herzegovina, Bistrik 7, 71000, Sarajevo, Bosnia and Herzegovina
Received:
24
January
2023
Accepted:
8
April
2023
Published online:
25
April
2023
Quantum-orbit theory is a powerful tool in strong-field physics and attoscience which enables useful insights into the physics of atomic processes in strong fields. We first review this theory with an emphasis on more complex tailored fields for which exact calculations are difficult. This is followed by examples of high-order harmonic generation and high-order above-threshold ionization by a bicircular field. Relevant quantum orbits and the corresponding quasiclassical electron trajectories are identified and used to describe the photoelectron momentum distribution. We have also applied quantum-orbit theory to describe terahertz-pulse-assisted strong-field ionization. A novel result is the discovery that, by adjusting the time delay between the laser and terahertz pulses, the low-energy structures in the photoelectron spectra can be extended to much higher energies (in comparison with that in the absence of the THz pulse), which allows to analyze them with a much better resolution.
Focus Point on Physics in the Balkans: Perspectives and Challenges. Guest editors: L. Bergé, G. S. Djordjević, Z. V. Popović.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. 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.
