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Abstract

In this paper, photoelectron interference in tunneling ionization of atoms by counter-rotating two-color elliptically polarized (TCEP) laser fields are investigated by numerically solving the two-dimensional time-dependent Schrödinger equation (TDSE) and strong field approximation (SFA). When the ellipticities of the two pulses are both 0.3, for a relative phase of 0.25π, the intracycle interference, fork-like holographic interference and arc-like holographic interference in the photoelectron momentum distribution overlap with each other. For a relative phase of 0, the arc-like holographic interference disappears and the intracycle interference and fork-like holographic interference are fully separated into the – p _xdirection and the + p _xdirection. Furthermore, the independent fork-like holographic interference can be enhanced or suppressed by changing the ellipticities of the two pulses. This provides an efficient tool for controlling and separating the interference structures in the photoelectron momentum distribution, which facilitates extracting the information about the target structure and the photoelectron ultrafast dynamics in strong fields.

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Authors and contacts

Corresponding author:Li Ying-Bin,liyingbin2008@163.com; Huang Cheng,huangcheng@swu.edu.cn

Funds:Project supported by the National Natural Science Foundation of China (Grant Nos. 11504302, 12074329, 12004323) and the Key Scientific Research Projects of Higher Education of Henan Province, China (Grant No. 20A140025).

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Vol. 71, Issue 9 - 2022-05-05

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