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Electron Dynamics and Correlations During High-Order Harmonic Generation in Be

Kutscher, Eric
Artemyev, Anton N.
Demekhin, Philipp V.

We investigate theoretically the high-order harmonic generation in beryllium atom irradiated by a short 1850 nm linearly polarized laser pulse in the intermediate strong-field ionization regime with the Keldysh parameter of 0.85. To this end, the respective time-dependent Schrödinger equation is solved by the time-dependent restricted-active-space configuration-interaction (TD-RASCI) method. By systematically increasing the active space of included configurations, we demonstrate an individual effect of different physical processes evoked by the pulse, which, all together, significantly enrich and extend the computed high-order harmonic generation spectrum.

Sponsor
Gefördert durch den Publikationsfonds der Universität Kassel
Citation
In: Frontiers in Chemistry Volume 10 / (2022-01-31) , S. ; eissn:2296-2646
Collections
@article{doi:10.17170/kobra-202205176197,
  author    ={Kutscher, Eric and Artemyev, Anton N. and Demekhin, Philipp V.},
  title    ={Electron Dynamics and Correlations During High-Order Harmonic Generation in Be},
  keywords ={530 and Elektronenkorrelation and Berylliumatom and Ionisation and Laserimpuls},
  copyright  ={http://creativecommons.org/licenses/by/4.0/},
  language ={en},
  journal  ={Frontiers in Chemistry},
  year   ={2022-01-31}
}