Modeling of the processes of ionization and excitation of nitrogen molecules by short and intense laser pulses

Vladimir T. Tikhonchuk, Yi Liu, Rostyslav Danylo, Aurélien Houard, and André Mysyrowicz
Phys. Rev. A 104, 063116 – Published 20 December 2021
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Abstract
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  • INTRODUCTION
  • ELEMENTS OF THE THEORETICAL MODEL
  • IONIZATION-EXCITATION MODEL
  • CONCLUSIONS
  • ACKNOWLEDGMENTS
  • APPENDICES
    • References

    Abstract

    We present a model describing ionization and excitation of nitrogen molecules by a strong and short laser pulse. Different from previous publications, both processes are considered within the same formalism of the density matrix. We account for the dependence of the dipole moment on the vibrational quantum number and for a large number of excited levels. Populations of the excited levels depend significantly on the laser intensity, wavelength, polarization, and pulse duration.

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    • Received 28 September 2021
    • Accepted 26 November 2021

    DOI:https://doi.org/10.1103/PhysRevA.104.063116

    ©2021 American Physical Society

    Physics Subject Headings (PhySH)

    1. Research Areas
    Multiphoton or tunneling ionization & excitationStrong electromagnetic field effects
    Atomic, Molecular & Optical

    Authors & Affiliations

    Vladimir T. Tikhonchuk1,2,*, Yi Liu3,4, Rostyslav Danylo5,3, Aurélien Houard5, and André Mysyrowicz5

    • 1University of Bordeaux-CNRS-CEA, Centre Lasers Intenses et Applications, UMR 5107, 33405 Talence, France
    • 2ELI-Beamlines Center, Institute of Physics, Czech Academy of Sciences, 25241 Dolní Břežany, Czech Republic
    • 3Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China
    • 4CAS Center for Excellence in Ultra-intense Laser Science, Shanghai 201800, China
    • 5Laboratoire d'Optique Appliquée, ENSTA Paris, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 91762 Palaiseau, France

    • *tikhonchuk@u-bordeaux.fr

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    Issue

    Vol. 104, Iss. 6 — December 2021

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