Attosecond ionic photoionization spectroscopy

Yidan Xu, Lulu Han, Wenyu Jiang, Zitan Zuo, Shengzhe Pan, Avner Fleischer, Kiyoshi Ueda, Jian Wu

Research output: Contribution to journalArticlepeer-review


Photoionization is one of the most fundamental processes in light–matter interaction. Advanced attosecond photoelectron spectroscopy provides the possibility to characterize the ultrafast photoemission process in an extremely short attosecond time scale. Following scattering symmetry rules, residual ions encode ultrafast photoionization prints at the instant of electron removal forming an alternative electron emission chronoscope. Here, we experimentally illustrate the attosecond ion reconstruction of attosecond beating by interference of two-photon transition (RABBIT)-like interferometry through the development of high-resolution ion momentum detection in atomic photoionization processes. Our ion interferometry presents identical momentum- and time-dependent scattering phase shift, as we observed in photoelectron spectroscopy, and thus demonstrates that ion interferometry can be a possible alternative attosecond approach to resolve the photoionization process, without the electron homogeneity limitation.

Original languageEnglish
Pages (from-to)3412-3415
Number of pages4
JournalOptics Letters
Issue number12
StatePublished - 15 Jun 2024

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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