Acta Optica Sinica, Volume. 41, Issue 10, 1002001(2021)
Scattering-Amplitude Phase Extraction from Spiderlike Photoelectron Momentum Distributions of Hydrogen Atoms
We report the numerical simulation on the spiderlike photoelectron momentum distributions (PMDs) of a hydrogen atom ionized by a linearly polarized laser field using the semiclassical rescattering model (SRM) and the time-dependent Schr?dinger equation (TDSE), and focus on the extraction of scattering-amplitude phases. Based upon the previous research results, we draw a conclusion that the time parameters obtained from the SRM and the saddle-point theories are approximately equal. In addition, we propose a novel method for phase extraction. Moreover, we establish two first-order approximate formulas to analytically describe the scattering amplitude phase. The phase obtained by the proposed method is related to the longitudinal and transverse momenta. The new method obviously enhances the extracting precision, although it increases the computation load.
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Jiu Tang, Guizhong Zhang, Yufei He, Guoyue Fu, Wei Shi, Jianquan Yao. Scattering-Amplitude Phase Extraction from Spiderlike Photoelectron Momentum Distributions of Hydrogen Atoms[J]. Acta Optica Sinica, 2021, 41(10): 1002001
Category: Atomic and Molecular Physics
Received: Oct. 9, 2020
Accepted: Dec. 15, 2020
Published Online: May. 8, 2021
The Author Email: Zhang Guizhong (johngzhang@tju.edu.cn)