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

Edvin Olofsson; Jan Marcus Dahlström

doi:10.1109/CLEO/EUROPE-EQEC57999.2023.10231615

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

Edvin Olofsson, Jan Marcus Dahlström

Mathematical Physics

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

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].

Original language	English
Title of 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.
ISBN (Electronic)	9798350345995
DOIs	https://doi.org/10.1109/CLEO/EUROPE-EQEC57999.2023.10231615
Publication status	Published - 2023
Event	2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023 - Munich, Germany Duration: 2023 Jun 26 → 2023 Jun 30

Conference

Conference	2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023
Country/Territory	Germany
City	Munich
Period	2023/06/26 → 2023/06/30

Subject classification (UKÄ)

Atom and Molecular Physics and Optics

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10.1109/CLEO/EUROPE-EQEC57999.2023.10231615

Cite this

Olofsson, E., & Dahlström, J. M. (2023). Photoelectron Signatures of Nonperturbative Dynamics in Resonant Two-photon Ionization of Helium. In 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023 IEEE - Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CLEO/EUROPE-EQEC57999.2023.10231615

@inproceedings{bdb691ba329348da941b4e462e09b954,

title = "Photoelectron Signatures of Nonperturbative Dynamics in Resonant Two-photon Ionization of Helium",

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].",

author = "Edvin Olofsson and Dahlstr{\"o}m, {Jan Marcus}",

year = "2023",

doi = "10.1109/CLEO/EUROPE-EQEC57999.2023.10231615",

language = "English",

booktitle = "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.",

address = "United States",

note = "2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023 ; Conference date: 26-06-2023 Through 30-06-2023",

}

Olofsson, E & Dahlström, JM 2023, Photoelectron Signatures of Nonperturbative Dynamics in Resonant Two-photon Ionization of Helium. in 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023. IEEE - Institute of Electrical and Electronics Engineers Inc., 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023, Munich, Germany, 2023/06/26. https://doi.org/10.1109/CLEO/EUROPE-EQEC57999.2023.10231615

Photoelectron Signatures of Nonperturbative Dynamics in Resonant Two-photon Ionization of Helium. / Olofsson, Edvin; Dahlström, Jan Marcus.
2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023. IEEE - Institute of Electrical and Electronics Engineers Inc., 2023.

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

TY - GEN

T1 - Photoelectron Signatures of Nonperturbative Dynamics in Resonant Two-photon Ionization of Helium

AU - Olofsson, Edvin

AU - Dahlström, Jan Marcus

PY - 2023

Y1 - 2023

N2 - 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].

AB - 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].

U2 - 10.1109/CLEO/EUROPE-EQEC57999.2023.10231615

DO - 10.1109/CLEO/EUROPE-EQEC57999.2023.10231615

M3 - Paper in conference proceeding

AN - SCOPUS:85175701944

BT - 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023

PB - IEEE - Institute of Electrical and Electronics Engineers Inc.

T2 - 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023

Y2 - 26 June 2023 through 30 June 2023

ER -

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

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