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  • Letter
  • Open Access

Transverse momentum resolved angular streaking after tunneling ionization

Dianxiang Ren1,2,*, Chao Chen3,4,*, Xiaokai Li1,2, Xiaoge Zhao1,2, Shang Wang3,5, Mingxuan Li1,2, Xinning Zhao1,2, Pan Ma1,2, Chuncheng Wang1,2 et al.

Yujun Yang1,2, Yanjun Chen3, Sizuo Luo1,2,†, and Dajun Ding1,2,‡

  • 1Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
  • 2Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China
  • 3College of Physics and Information Technology, Shaan'xi Normal University, Xi'an 710119, China
  • 4College of Physics and Electronic Engineering, Xingtai University, Xingtai 054001, China
  • 5College of Physics and Hebei Key Laboratory of Photophysics Research and Application, Hebei Normal University, Shijiazhuang 050024, China

  • *These authors contributed equally to this work.
  • †Corresponding author: luosz@jlu.edu.cn.
  • ‡Corresponding author: dajund@jlu.edu.cn
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Phys. Rev. Research 5, L032044 – Published 25 September, 2023

DOI: https://doi.org/10.1103/PhysRevResearch.5.L032044

Abstract

The initial momentum along laser propagation plays a significant role in the electron dynamics during tunneling ionization. Our study shows that the offset emission angle decreases with increasing lateral momentum. By using three-dimensional strong-field approximation calculations with initial transverse momentum and a Coulomb correction, we accurately reproduce the transverse momentum-dependent angular shifts of Ar, Kr, and Xe atoms. We find that these shifts are attributed to the influence of initial momentum, tunneling exits, and a long-range Coulomb potential during electron propagation. Additionally, we establish a formula to reconstruct the initial transverse momentum from the final transverse momentum. The result may provide another perspective on attosecond angular streaking, which is crucial for understanding the influence of the Coulomb potential on electron motion.

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Phys. Rev. Research 5, L032044– Published 25 September, 2023
  • Received 29 March 2023
  • Revised 30 June 2023
  • Accepted 22 August 2023
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