Relative phase effect of nonsequential double ionization in Ar by two-color elliptically polarized laser field

doi:10.1088/1674-1056/ab5d03

中国物理B ›› 2020, Vol. 29 ›› Issue (1): 13203-013203.doi: 10.1088/1674-1056/ab5d03

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇下一篇

Relative phase effect of nonsequential double ionization in Ar by two-color elliptically polarized laser field

Jia-He Chen(陈佳贺), Tong-Tong Xu(徐彤彤), Tao Han(韩涛), Yue Sun(孙悦), Qing-Yun Xu(徐清芸), Xue-Shen Liu(刘学深)

1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
2 College of Sciences, Northeastern University, Shenyang 110819, China

收稿日期:2019-10-18 修回日期:2019-11-11 出版日期:2020-01-05 发布日期:2020-01-05
通讯作者: Xue-Shen Liu E-mail:liuxs@jlu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61575077) and the Natural Science Foundation of Jilin Province of China (Grant No. 20180101225JC).

Relative phase effect of nonsequential double ionization in Ar by two-color elliptically polarized laser field

Jia-He Chen(陈佳贺)¹, Tong-Tong Xu(徐彤彤)², Tao Han(韩涛)¹, Yue Sun(孙悦)¹, Qing-Yun Xu(徐清芸)¹, Xue-Shen Liu(刘学深)¹

1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
2 College of Sciences, Northeastern University, Shenyang 110819, China

Received:2019-10-18 Revised:2019-11-11 Online:2020-01-05 Published:2020-01-05
Contact: Xue-Shen Liu E-mail:liuxs@jlu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61575077) and the Natural Science Foundation of Jilin Province of China (Grant No. 20180101225JC).

摘要/Abstract

摘要： We investigated the nonsequential double ionization (NSDI) in Ar by two-color elliptically polarized laser field with a three-dimensional (3D) classical ensemble method. We study the relative phase effect of NSDI and distinguish two particular recollision channels in NSDI, which are recollision-impact ionization (RII) and recollision-induced excitation with subsequent ionization (RESI), according to the delay-time between the recollision and the final double ionization. The numerical results indicate that the ion momentum distribution is changed and the triangle structure is more obvious with the decrease of the relative phase. We also demonstrate that the RESI process always dominates in the whole double ionization process and the ratio of RESI and RII channels can be influenced by the relative phase.

关键词: nonsequential double ionization, two-color elliptically polarized laser field, recollision-impact ionization, recollision-induced excitation with subsequent ionization

Abstract: We investigated the nonsequential double ionization (NSDI) in Ar by two-color elliptically polarized laser field with a three-dimensional (3D) classical ensemble method. We study the relative phase effect of NSDI and distinguish two particular recollision channels in NSDI, which are recollision-impact ionization (RII) and recollision-induced excitation with subsequent ionization (RESI), according to the delay-time between the recollision and the final double ionization. The numerical results indicate that the ion momentum distribution is changed and the triangle structure is more obvious with the decrease of the relative phase. We also demonstrate that the RESI process always dominates in the whole double ionization process and the ratio of RESI and RII channels can be influenced by the relative phase.

Key words: nonsequential double ionization, two-color elliptically polarized laser field, recollision-impact ionization, recollision-induced excitation with subsequent ionization

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

32.80.Rm

42.50.Hz (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift) 42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation)

陈佳贺, 徐彤彤, 韩涛, 孙悦, 徐清芸, 刘学深. Relative phase effect of nonsequential double ionization in Ar by two-color elliptically polarized laser field[J]. 中国物理B, 2020, 29(1): 13203-013203.

Jia-He Chen(陈佳贺), Tong-Tong Xu(徐彤彤), Tao Han(韩涛), Yue Sun(孙悦), Qing-Yun Xu(徐清芸), Xue-Shen Liu(刘学深). Relative phase effect of nonsequential double ionization in Ar by two-color elliptically polarized laser field[J]. Chin. Phys. B, 2020, 29(1): 13203-013203.

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Relative phase effect of nonsequential double ionization in Ar by two-color elliptically polarized laser field

Relative phase effect of nonsequential double ionization in Ar by two-color elliptically polarized laser field

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