Photoelectron spectra after multiphoton ionization of Li atoms in the one-photon Rabi-flopping regime

D. A. Tumakov, Dmitry A. Telnov, G. Plunien, and V. M. Shabaev
Phys. Rev. A 100, 023407 – Published 9 August 2019

Abstract

We calculate two-dimensional photoelectron momentum distributions and energy spectra after multiphoton ionization of Li atoms subject to intense laser fields in the one-photon Rabi-flopping regime. The time-dependent Schrödinger equation is solved within the single-active-electron approximation using a model potential which reproduces accurately the binding energies and dipole matrix elements of the Li atom. Interaction with the external electromagnetic field is treated within the dipole approximation. We show that the Rabi oscillations of the population between the ground 2s state and the excited 2p state in the one-photon resonance regime are reflected in the energy spectra of emitted photoelectrons, which manifest interference structures with minima. Transformations of the interference structures in the photoelectron energy spectra caused by the variation of the laser peak intensity and pulse duration are analyzed.

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  • Received 24 May 2019

DOI:https://doi.org/10.1103/PhysRevA.100.023407

©2019 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

D. A. Tumakov1,*, Dmitry A. Telnov1,†, G. Plunien2, and V. M. Shabaev1

  • 1Department of Physics, St. Petersburg State University, Universitetskaya Naberezhnaya 7/9, St. Petersburg 199034, Russia
  • 2Institut für Theoretische Physik, Technische Universität Dresden, Mommsenstrasse 13, Dresden D-01062, Germany

  • *dm.tumakov@gmail.com
  • d.telnov@spbu.ru

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Issue

Vol. 100, Iss. 2 — August 2019

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