Photoelectron momentum distributions of Ne and Xe dimers in counter-rotating circularly polarized laser fields

doi:10.1088/1674-1056/ac4e05

中国物理B ›› 2022, Vol. 31 ›› Issue (6): 63202-063202.doi: 10.1088/1674-1056/ac4e05

Photoelectron momentum distributions of Ne and Xe dimers in counter-rotating circularly polarized laser fields

Zhi-Xian Lei(雷志仙), Qing-Yun Xu(徐清芸), Zhi-Jie Yang(杨志杰), Yong-Lin He(何永林), and Jing Guo(郭静)^†

Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China

收稿日期:2021-11-22 修回日期:2022-01-17 接受日期:2022-01-24 出版日期:2022-05-17 发布日期:2022-06-06
通讯作者: Jing Guo E-mail:gjing@jlu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 12074146).

Photoelectron momentum distributions of Ne and Xe dimers in counter-rotating circularly polarized laser fields

Zhi-Xian Lei(雷志仙), Qing-Yun Xu(徐清芸), Zhi-Jie Yang(杨志杰), Yong-Lin He(何永林), and Jing Guo(郭静)^†

Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China

Received:2021-11-22 Revised:2022-01-17 Accepted:2022-01-24 Online:2022-05-17 Published:2022-06-06
Contact: Jing Guo E-mail:gjing@jlu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 12074146).

摘要/Abstract

摘要： The strong-field ionization of dimers is investigated theoretically in counter-rotating circularly polarized laser fields. By numerically solving the two-dimensional (2D) time-dependent Schrödinger equation (TDSE) with the single-electron approximation (SEA) frame, we present the photoelectron momentum distributions (PMDs) and photoelectron angular distribution (PADs) of aligned Ne and Xe dimers. It is found that the PMDs and PADs strongly depend on the time delays by counter-rotating circularly polarized laser pulses. The results can be explained by the ultrafast photoionization model and the evolution of electron wave packets for Ne and Xe dimers. Besides, We make a comparison of PMDs between Ne atom and Ne dimer.

关键词: time-dependent Schrö, dinger equation, dimer, photoelectron momentum distributions, ultrafast photoionization model

Abstract: The strong-field ionization of dimers is investigated theoretically in counter-rotating circularly polarized laser fields. By numerically solving the two-dimensional (2D) time-dependent Schrödinger equation (TDSE) with the single-electron approximation (SEA) frame, we present the photoelectron momentum distributions (PMDs) and photoelectron angular distribution (PADs) of aligned Ne and Xe dimers. It is found that the PMDs and PADs strongly depend on the time delays by counter-rotating circularly polarized laser pulses. The results can be explained by the ultrafast photoionization model and the evolution of electron wave packets for Ne and Xe dimers. Besides, We make a comparison of PMDs between Ne atom and Ne dimer.

Key words: time-dependent Schrö, dinger equation, dimer, photoelectron momentum distributions, ultrafast photoionization model

中图分类号: (Multiphoton ionization and excitation to highly excited states)

32.80.Rm

32.80.Fb (Photoionization of atoms and ions) 42.50.Hz (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift) 42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)

Zhi-Xian Lei(雷志仙), Qing-Yun Xu(徐清芸), Zhi-Jie Yang(杨志杰), Yong-Lin He(何永林), and Jing Guo(郭静). Photoelectron momentum distributions of Ne and Xe dimers in counter-rotating circularly polarized laser fields[J]. 中国物理B, 2022, 31(6): 63202-063202.

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Photoelectron momentum distributions of Ne and Xe dimers in counter-rotating circularly polarized laser fields

Photoelectron momentum distributions of Ne and Xe dimers in counter-rotating circularly polarized laser fields

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