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Influence of final state interactions in attosecond photoelectron interferometry

Luo, S. LU ; Weissenbilder, R. LU ; Laurell, H. LU ; Bello, R. Y. ; Marante, C. ; Ammitzböll, M. LU orcid ; Neoričić, L. ; Ljungdahl, A. ; Squibb, R. J. and Feifel, R. , et al. (2024) In Physical Review Research 6(4).
Abstract

Fano resonances are ubiquitous phenomena appearing in many fields of physics, e.g., atomic or molecular photoionization, or electron transport in quantum dots. Recently, attosecond interferometric techniques have been used to measure the amplitude and phase of photoelectron wave packets close to Fano resonances in argon and helium, allowing for the retrieval of the temporal dynamics of the photoionization process. In this work, we study the photoionization of argon atoms close to the 3s13p64p autoionizing state using an interferometric technique with high spectral resolution. The phase shows a monotonic 2π variation across the resonance or a nonmonotonic less than π variation depending on experimental conditions, e.g., the probe laser... (More)

Fano resonances are ubiquitous phenomena appearing in many fields of physics, e.g., atomic or molecular photoionization, or electron transport in quantum dots. Recently, attosecond interferometric techniques have been used to measure the amplitude and phase of photoelectron wave packets close to Fano resonances in argon and helium, allowing for the retrieval of the temporal dynamics of the photoionization process. In this work, we study the photoionization of argon atoms close to the 3s13p64p autoionizing state using an interferometric technique with high spectral resolution. The phase shows a monotonic 2π variation across the resonance or a nonmonotonic less than π variation depending on experimental conditions, e.g., the probe laser bandwidth. Using three different, state-of-the-art calculations, we show that the measured phase is influenced by the interaction between final states reached by two-photon transitions.

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organization
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type
Contribution to journal
publication status
published
subject
in
Physical Review Research
volume
6
issue
4
article number
043271
publisher
American Physical Society
external identifiers
  • scopus:85212335416
ISSN
2643-1564
DOI
10.1103/PhysRevResearch.6.043271
language
English
LU publication?
yes
id
cc46cab0-14a1-4734-a3ff-2ace5daef9cb
date added to LUP
2025-01-22 11:35:22
date last changed
2025-06-23 12:20:36
@article{cc46cab0-14a1-4734-a3ff-2ace5daef9cb,
  abstract     = {{<p>Fano resonances are ubiquitous phenomena appearing in many fields of physics, e.g., atomic or molecular photoionization, or electron transport in quantum dots. Recently, attosecond interferometric techniques have been used to measure the amplitude and phase of photoelectron wave packets close to Fano resonances in argon and helium, allowing for the retrieval of the temporal dynamics of the photoionization process. In this work, we study the photoionization of argon atoms close to the 3s13p64p autoionizing state using an interferometric technique with high spectral resolution. The phase shows a monotonic 2π variation across the resonance or a nonmonotonic less than π variation depending on experimental conditions, e.g., the probe laser bandwidth. Using three different, state-of-the-art calculations, we show that the measured phase is influenced by the interaction between final states reached by two-photon transitions.</p>}},
  author       = {{Luo, S. and Weissenbilder, R. and Laurell, H. and Bello, R. Y. and Marante, C. and Ammitzböll, M. and Neoričić, L. and Ljungdahl, A. and Squibb, R. J. and Feifel, R. and Gisselbrecht, M. and Arnold, C. L. and Martín, F. and Lindroth, E. and Argenti, L. and Busto, D. and L'Huillier, A.}},
  issn         = {{2643-1564}},
  language     = {{eng}},
  number       = {{4}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Research}},
  title        = {{Influence of final state interactions in attosecond photoelectron interferometry}},
  url          = {{http://dx.doi.org/10.1103/PhysRevResearch.6.043271}},
  doi          = {{10.1103/PhysRevResearch.6.043271}},
  volume       = {{6}},
  year         = {{2024}},
}