Controlling electron collision by counterrotating circular two-color laser fields

doi:10.1088/1674-1056/ab7907

中国物理B ›› 2020, Vol. 29 ›› Issue (4): 43202-043202.doi: 10.1088/1674-1056/ab7907

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Controlling electron collision by counterrotating circular two-color laser fields

Baoqin Li(李宝琴), Xianghe Ren(任向河), Jingtao Zhang(张敬涛)

1 Department of Physics, Shanghai Normal University, Shanghai 200234, China;
2 International School for Optoelectronic Engineering, QiLu University of Technology(Shandong Academy of Sciences), Jinan 250353, China

收稿日期:2019-12-26 修回日期:2020-02-14 出版日期:2020-04-05 发布日期:2020-04-05
通讯作者: Jingtao Zhang E-mail:jtzhang@shnu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61475168, 11674231, and 61575124).

Controlling electron collision by counterrotating circular two-color laser fields

Baoqin Li(李宝琴)¹, Xianghe Ren(任向河)², Jingtao Zhang(张敬涛)¹

1 Department of Physics, Shanghai Normal University, Shanghai 200234, China;
2 International School for Optoelectronic Engineering, QiLu University of Technology(Shandong Academy of Sciences), Jinan 250353, China

Received:2019-12-26 Revised:2020-02-14 Online:2020-04-05 Published:2020-04-05
Contact: Jingtao Zhang E-mail:jtzhang@shnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61475168, 11674231, and 61575124).

摘要/Abstract

摘要： Electron collision as well as its controlling lies in the core of study on nonsequential double ionization (NSDI). A single collision occurred in a convergent time is important to disclose the essential features of the electron correlation. However, it is difficult to form such a collision. By using counterrotating circular two-color (CRTC) laser fields, we show that a single electron collision can be achieved in a convergent time and a net electron correlation is set up within the sub-femtosecond time scale in the NSDI process of Ar atoms. The proposed method is also valid for other atoms, provided that one chooses the frequency and intensity of the CRTC field according to a scaling law.

关键词: counterrotating circular two-color laser fields, nonsequential double ionization, electron collision

Abstract: Electron collision as well as its controlling lies in the core of study on nonsequential double ionization (NSDI). A single collision occurred in a convergent time is important to disclose the essential features of the electron correlation. However, it is difficult to form such a collision. By using counterrotating circular two-color (CRTC) laser fields, we show that a single electron collision can be achieved in a convergent time and a net electron correlation is set up within the sub-femtosecond time scale in the NSDI process of Ar atoms. The proposed method is also valid for other atoms, provided that one chooses the frequency and intensity of the CRTC field according to a scaling law.

Key words: counterrotating circular two-color laser fields, nonsequential double ionization, electron collision

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

32.80.Rm

32.30.-r (Atomic spectra?) 32.80.Fb (Photoionization of atoms and ions)

李宝琴, 任向河, 张敬涛. Controlling electron collision by counterrotating circular two-color laser fields[J]. 中国物理B, 2020, 29(4): 43202-043202.

Baoqin Li(李宝琴), Xianghe Ren(任向河), Jingtao Zhang(张敬涛). Controlling electron collision by counterrotating circular two-color laser fields[J]. Chin. Phys. B, 2020, 29(4): 43202-043202.

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Controlling electron collision by counterrotating circular two-color laser fields

Controlling electron collision by counterrotating circular two-color laser fields

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