Near-threshold photoelectron holography beyond the strong-field approximation
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 present an excellent agreement with the result from time-dependent Schr\"odinger equation method. We show that the low-energy fan-shaped structure 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-scattering electron trajectories, which affects different momenta and scattering angles unequally. For the first time, 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.
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Cite
@article{arxiv.1703.04123,
title = {Near-threshold photoelectron holography beyond the strong-field approximation},
author = {XuanYang Lai and ShaoGang Yu and YiYi Huang and LinQiang Hua and Cheng Gong and Wei Quan and Carla Figueira de Morisson Faria and XiaoJun Liu},
journal= {arXiv preprint arXiv:1703.04123},
year = {2017}
}
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