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Spatiotemporal imaging and shaping of electron wave functions using novel attoclock interferometry

Author

Listed:
  • Peipei Ge

    (Peking University
    Huazhong University of Science and Technology)

  • Yankun Dou

    (Peking University)

  • Meng Han

    (Kansas State University)

  • Yiqi Fang

    (Peking University)

  • Yongkai Deng

    (Peking University)

  • Chengyin Wu

    (Peking University)

  • Qihuang Gong

    (Peking University
    Shanxi University
    Peking University Yangtze Delta Institute of Optoelectronics)

  • Yunquan Liu

    (Peking University
    Shanxi University
    Peking University Yangtze Delta Institute of Optoelectronics)

Abstract

Electrons detached from atoms by photoionization carry valuable information about light-atom interactions. Characterizing and shaping the electron wave function on its natural timescale is of paramount importance for understanding and controlling ultrafast electron dynamics in atoms, molecules and condensed matter. Here we propose a novel attoclock interferometry to shape and image the electron wave function in atomic photoionization. Using a combination of a strong circularly polarized second harmonic and a weak linearly polarized fundamental field, we spatiotemporally modulate the atomic potential barrier and shape the electron wave functions, which are mapped into a temporal interferometry. By analyzing the two-color phase-resolved and angle-resolved photoelectron interference, we are able to reconstruct the spatiotemporal evolution of the shaping on the amplitude and phase of electron wave function in momentum space within the optical cycle, from which we identify the quantum nature of strong-field ionization and reveal the effect of the spatiotemporal properties of atomic potential on the departing electron. This study provides a new approach for spatiotemporal shaping and imaging of electron wave function in intense light-matter interactions and holds great potential for resolving ultrafast electronic dynamics in molecules, solids, and liquids.

Suggested Citation

  • Peipei Ge & Yankun Dou & Meng Han & Yiqi Fang & Yongkai Deng & Chengyin Wu & Qihuang Gong & Yunquan Liu, 2024. "Spatiotemporal imaging and shaping of electron wave functions using novel attoclock interferometry," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-44775-5
    DOI: 10.1038/s41467-024-44775-5
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