Coulomb focusing in attosecond angular streaking

Xiaokai Li; Xiwang Liu; Chuncheng Wang; Shuai Ben; Shengpeng Zhou; Yizhang Yang; Xiaohong Song; Jing Chen; Weifeng Yang; Dajun Ding

doi:10.1038/s41377-024-01600-4

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Coulomb focusing in attosecond angular streaking

Original Articles

- Coulomb focusing in attosecond angular streaking
- Light: Science & Applications Vol. 13, Issue 11, Pages: 2611-2619(2024)
- Affiliations：
  
  1.Institute of Atomic and Molecular Physics, and Advanced Light Field and Modern Medical Treatment Science and Technology Innovation Center of Jilin Province, Jilin University, Changchun 130012, China
  2.School of Physics and Optoelectronic Engineering, Hainan University, Haikou 570228, China
  3.Hefei National Laboratory, and Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China
  4.Center for Theoretical Physics, Hainan University, Haikou 570228, China
- Author bio：
  
  Chuncheng Wang (ccwang@jlu.edu.cn)
  Xiaohong Song (song_xiaohong@hainanu.edu.cn)
  Weifeng Yang (wfyang@hainanu.edu.cn)
  Dajun Ding (dajund@jlu.edu.cn)
- Funds：
- DOI：10.1038/s41377-024-01600-4
  CLC：
- Received：07 December 2023，
  
  Revised：09 August 2024，
  
  Accepted：2024-08-21，
  
  Published Online：11 September 2024，
  
  Published：30 November 2024
- Accepted：
Scan QR Code
Li, X. K. et al. Coulomb focusing in attosecond angular streaking. Light: Science & Applications, 13, 2611-2619 (2024).
DOI：

Li, X. K. et al. Coulomb focusing in attosecond angular streaking. Light: Science & Applications, 13, 2611-2619 (2024). DOI： 10.1038/s41377-024-01600-4.

摘要

Abstract

Angular streaking technique employs a close-to-circularly polarized laser pulse to build a mapping between the instant of maximum ionization and the most probable emission angle in the photoelectron momentum distribution

thereby enabling the probe of laser-induced electron dynamics in atoms and molecules with attosecond temporal resolution. Here

through the jointed experimental observations and improved Coulomb-corrected strong-field approximation statistical simulations

we identify that electrons emitted at different initial ionization times converge to the most probable emission angle due to the previously-unexpected Coulomb focusing triggered by the nonadiabatic laser-induced electron tunneling. We reveal that the Coulomb focusing induces the observed nonintuitive energy-dependent trend in the angular streaking measurements on the nonadiabatic tunneling

and that tunneling dynamics under the classically forbidden barrier can leave fingerprints on the resulting signals. Our findings have significant implications for the decoding of the intricate tunneling dynamics with attosecond angular streaking.

关键词

Keywords

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