Near-threshold photoelectron holography beyond the strong-field approximation

XuanYang Lai, ShaoGang Yu, YiYi Huang, LinQiang Hua, Cheng Gong, Wei Quan, C. Figueira de Morisson Faria, and XiaoJun Liu
Phys. Rev. A 96, 013414 – Published 17 July 2017

Abstract

We study photoelectron angular distributions (PADs) near the ionization threshold with a newly developed Coulomb quantum-orbit strong-field approximation (CQSFA) theory. The CQSFA simulations exhibit an excellent agreement with the result from the time-dependent Schrödinger equation. We show that the low-energy fan-shaped pattern in the PADs corresponds to a subcycle time-resolved holographic structure and stems from the significant influence of the Coulomb potential on the phase of the forward-scattered electron trajectories, which affects different momenta and scattering angles unequally. Our work provides a direct explanation of how the fan-shaped structure is formed, based on the quantum interference of direct and forward-scattered orbits. Moreover, our work shows that the fan-shaped pattern can be used to extract information on the target structure, as the number of fringes in the PADs depends strongly on the symmetry of the electronic bound state.

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  • Received 12 August 2016

DOI:https://doi.org/10.1103/PhysRevA.96.013414

©2017 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

XuanYang Lai1, ShaoGang Yu1,2, YiYi Huang1,2, LinQiang Hua1, Cheng Gong1, Wei Quan1, C. Figueira de Morisson Faria3,*, and XiaoJun Liu1,†

  • 1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
  • 2School of Physics, University of Chinese Academy of Sciences, Beijing 100080, China
  • 3Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom

  • *c.faria@ucl.ac.uk
  • xjliu@wipm.ac.cn

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Vol. 96, Iss. 1 — July 2017

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