Influence of final state interactions in attosecond photoelectron interferometry

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 <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mn>3</a:mn><a:msup><a:mi>s</a:mi><a:mn>1</a:mn></a:msup><a:mn>3</a:mn><a:msup><a:mi>p</a:mi><a:mn>6</a:mn></a:msup><a:mn>4</a:mn><a:mi>p</a:mi></a:mrow></a:math> autoionizing state using an interferometric technique with high spectral resolution. The phase shows a monotonic <b:math xmlns:b="http://www.w3.org/1998/Math/MathML"><b:mrow><b:mn>2</b:mn><b:mi>π</b:mi></b:mrow></b:math> variation across the resonance or a nonmonotonic less than <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"><c:mi>π</c:mi></c:math> 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. Published by the American Physical Society 2024

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Publication Details

Journal
Physical Review Research
Published
2024-12-13
DOI
https://doi.org/10.1103/physrevresearch.6.043271
Citations
8
Primary Topic
Laser-Matter Interactions and Applications
Type
article
Field-Weighted Citation Impact
2.70

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article

Influence of final state interactions in attosecond photoelectron interferometry

Anton Ljungdahl, M. Ammitzböll, Lana Neoričić, Luca Argenti et al.
8 citations
Physical Review Research
Laser-Matter Interactions and Applications
2.70
article

Influence of final state interactions in attosecond photoelectron interferometry

Anton Ljungdahl, M. Ammitzböll, Lana Neoričić, Luca Argenti, Sizuo Luo, Hugo Laurell, David Busto, Richard J. Squibb, Cord L. Arnold, Roger Y. Bello, Robin Weissenbilder, Carlos Marante, Fernando Martı́n, Mathieu Gisselbrecht, R. Feifel, Eva Lindroth, A. L’Huillier
article en
8 citations

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 <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mn>3</a:mn><a:msup><a:mi>s</a:mi><a:mn>1</a:mn></a:msup><a:mn>3</a:mn><a:msup><a:mi>p</a:mi><a:mn>6</a:mn></a:msup><a:mn>4</a:mn><a:mi>p</a:mi></a:mrow></a:math> autoionizing state using an interferometric technique with high spectral resolution. The phase shows a monotonic <b:math xmlns:b="http://www.w3.org/1998/Math/MathML"><b:mrow><b:mn>2</b:mn><b:mi>π</b:mi></b:mrow></b:math> variation across the resonance or a nonmonotonic less than <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"><c:mi>π</c:mi></c:math> 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. Published by the American Physical Society 2024

Physical Review ResearchVol. 6(4)
Madrid Institute for Advanced Studies (ES), University of Central Florida (US), University of Freiburg (DE), Stockholm University (SE), Lund University (SE), AlbaNova (SE), Universidad Autónoma de Madrid (ES), University of Gothenburg (SE)
National Science Foundation, Knut och Alice Wallenbergs Stiftelse, Vetenskapsrådet, Ministerio de Ciencia e Innovación, European Research Council, Wallenberg Center for Quantum Technology, Chalmers University of Technology
Openalex Percentile: Top 9%
Laser-Matter Interactions and Applications
2.70
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