Phase evolution of strong-field ionization
We investigate the time-dependent evolution of the dipole phase shift induced by strong-field ionization (SFI) using attosecond transient absorption spectroscopy (ATAS) for time delays where the pump-probe pulses overlap. We study measured and calculated time-dependent attosecond transient absorption spectra of the ionic <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mn>4</a:mn><a:mi mathvariant="italic">d</a:mi><a:mo>→</a:mo><a:mn>5</a:mn><a:mi mathvariant="italic">p</a:mi></a:mrow></a:math> in xenon, and present the time-dependent line shape parameters in the complex plane. We attribute the complex dynamics to the contribution of three distinct processes: accumulation of ionization, transient population, and retrapping of excited states arising from polarization of the ground state.
Authors
- A. C. Brown (ORCID: https://orcid.org/0000-0001-5652-1495)
- Maximilian Hartmann (ORCID: https://orcid.org/0000-0002-6494-9368)
- Shuyuan Hu
- Thomas Pfeifer (ORCID: https://orcid.org/0000-0002-5312-3747)
- H. W. van der Hart (ORCID: https://orcid.org/0000-0002-5088-9835)
- Lynda Hutcheson (ORCID: https://orcid.org/0000-0002-4538-5421)
- Paul Birk (ORCID: https://orcid.org/0000-0002-1405-5155)
- Gergana D. Borisova (ORCID: https://orcid.org/0000-0003-3558-3093)
- Christian Ott (ORCID: https://orcid.org/0000-0003-4110-0916)
Institutions
- Queen's University Belfast (GB)
- Max Planck Institute for Nuclear Physics (DE)
Publication Details
- Journal
- Physical Review Research
- Published
- 2025-06-24
- DOI
- https://doi.org/10.1103/physrevresearch.7.l022074
- Primary Topic
- Laser-Matter Interactions and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Deutsche Forschungsgemeinschaft
- Engineering and Physical Sciences Research Council
- H2020 European Research Council