Circular dichroism in multiphoton ionization of resonantly excited helium ions near channel closing
The circular dichroism (CD) of photoelectrons generated by near-infrared (NIR) laser pulses using multiphoton ionization of excited He<sup>+</sup> ions in the 3p(m= +1) state is investigated. The ions were prepared by circularly polarized extreme ultraviolet (XUV) pulses. For circularly polarized NIR pulses co- and counter-rotating relative to the polarization of the XUV pulse, a complex variation of the CD is observed as a result of intensity- and polarization-dependent Freeman resonances, with and without additional dichroic AC-Stark shifts. The experimental results are compared with numerical solutions of the time-dependent Schrödinger equation to identify and interpret the pronounced variation of the experimentally observed CD.
Authors
- R. Wagner
- Oksana Plekan (ORCID: https://orcid.org/0000-0002-4692-7018)
- Klaus Bartschat (ORCID: https://orcid.org/0000-0001-6215-5014)
- Philipp Schmidt (ORCID: https://orcid.org/0000-0003-1980-6998)
- Michele Di Fraia (ORCID: https://orcid.org/0000-0001-8102-0799)
- Marco Zangrando (ORCID: https://orcid.org/0000-0001-8860-3962)
- Markus Ilchen (ORCID: https://orcid.org/0000-0001-5201-0495)
- Alexei N. Grum-Grzhimailo (ORCID: https://orcid.org/0000-0003-1415-7327)
- Valerija Music (ORCID: https://orcid.org/0000-0002-5072-0837)
- G. De Ninno (ORCID: https://orcid.org/0000-0002-4648-4413)
- Michele Manfredda (ORCID: https://orcid.org/0000-0002-1965-8350)
- Nicolas Douguet (ORCID: https://orcid.org/0009-0005-0620-4236)
- J. Hofbrucker (ORCID: https://orcid.org/0000-0002-5917-3649)
- Kevin C. Prince (ORCID: https://orcid.org/0000-0002-5416-7354)
- Alexander Demidovich (ORCID: https://orcid.org/0000-0003-2355-2257)
- Carlo Callegari (ORCID: https://orcid.org/0000-0001-5491-7752)
- Daniel E. Rivas (ORCID: https://orcid.org/0000-0002-7540-4902)
- Michael Meyer (ORCID: https://orcid.org/0000-0002-1444-6770)
- Niclas Wieland
- Zachary Delk
Institutions
- University of Kassel (DE)
- University of Central Florida (US)
- Helmholtz Institute Jena (DE)
- Universität Hamburg (DE)
- Kennesaw State University (US)
- Lomonosov Moscow State University (RU)
- Deutsches Elektronen-Synchrotron DESY (DE)
- Elettra-Sincrotrone Trieste S.C.p.A. (IT)
- Istituto Officina dei Materiali (IT)
- Drake University (US)
- European X-Ray Free-Electron Laser (DE)
Publication Details
- Journal
- Scientific Reports
- Published
- 2024-11-08
- DOI
- https://doi.org/10.1038/s41598-024-75459-1
- Citations
- 1
- Primary Topic
- Laser-Matter Interactions and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.34
Funders
- National Science Foundation
- Elettra-Sincrotrone Trieste
- Deutsche Forschungsgemeinschaft
- Volkswagen Foundation
- Max Planck Institute for Nuclear Physics
- Nuclear Physics