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Photoelectron Signatures of Nonperturbative Dynamics in Resonant Two-photon Ionization of Helium

Olofsson, Edvin LU and Dahlström, Jan Marcus LU (2023) 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023
Abstract

When an atom is driven by a laser field with a photon energy that is nearly resonant with an atomic transition, it can undergo periodic population transfers between the ground and excited state, known as Rabi oscillations [1,2]. The aim of this work is to study photoionization from atoms for parameters accessible to a free-electron laser (FEL) [3]. Using time dependent perturbation theory to model photoionization from a Rabi oscillating atom, we have shown that in addition to the expected pathway of ionization from the excited state, non-resonant two-photon ionization will have a comparable amplitude at intensities on the order of 1013 W/cm2 [3].

Please use this url to cite or link to this publication:
author
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organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
conference name
2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023
conference location
Munich, Germany
conference dates
2023-06-26 - 2023-06-30
external identifiers
  • scopus:85175701944
ISBN
9798350345995
DOI
10.1109/CLEO/EUROPE-EQEC57999.2023.10231615
language
English
LU publication?
yes
id
bdb691ba-3293-48da-941b-4e462e09b954
date added to LUP
2023-12-04 12:04:08
date last changed
2023-12-04 12:05:05
@inproceedings{bdb691ba-3293-48da-941b-4e462e09b954,
  abstract     = {{<p>When an atom is driven by a laser field with a photon energy that is nearly resonant with an atomic transition, it can undergo periodic population transfers between the ground and excited state, known as Rabi oscillations [1,2]. The aim of this work is to study photoionization from atoms for parameters accessible to a free-electron laser (FEL) [3]. Using time dependent perturbation theory to model photoionization from a Rabi oscillating atom, we have shown that in addition to the expected pathway of ionization from the excited state, non-resonant two-photon ionization will have a comparable amplitude at intensities on the order of 10<sup>13</sup> W/cm<sup>2</sup> [3].</p>}},
  author       = {{Olofsson, Edvin and Dahlström, Jan Marcus}},
  booktitle    = {{2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023}},
  isbn         = {{9798350345995}},
  language     = {{eng}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  title        = {{Photoelectron Signatures of Nonperturbative Dynamics in Resonant Two-photon Ionization of Helium}},
  url          = {{http://dx.doi.org/10.1109/CLEO/EUROPE-EQEC57999.2023.10231615}},
  doi          = {{10.1109/CLEO/EUROPE-EQEC57999.2023.10231615}},
  year         = {{2023}},
}