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  • Letter
  • Open Access

Characterization of XUV+IR ionization using the circular dichroic phase

Anatoli S. Kheifets*

  • Research School of Physics, The Australian National University, Canberra ACT 2601, Australia

  • *A.Kheifets@anu.edu.au
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Phys. Rev. Research 6, L012002 – Published 3 January, 2024

DOI: https://doi.org/10.1103/PhysRevResearch.6.L012002

Abstract

A strong helicity dependence of reconstruction of attosecond bursts by beating of two-photon transitions (RABBITT) with circularly polarized XUV and IR pulses was reported by Han et al. [Nat. Phys. 19, 230 (2023) and arXiv:2302.04137]. They attributed a circular dichroic phase in RABBITT to the helical structure of the photoelectron wave packets in the final state. We exploit this effect to determine the magnitude and phase of two-photon XUV+IR ionization amplitudes. In s-electron targets (H, He, Li), such a determination is fully ab initio and requires no further approximations. In heavier noble gases like Ar, characterization of two-photon ionization amplitudes can be made from the circular dichroic phase with minimal and very realistic assumptions.

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Corrections

15 February, 2024

Correction: A source in the abstract and in Ref. [7] contained an incorrect article ID and has been fixed.

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Outline

Information

Phys. Rev. Research 6, L012002– Published 3 January, 2024
  • Received 7 June 2023
  • Accepted 28 November 2023
  • Corrected 15 February 2024
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