中国物理B ›› 2018, Vol. 27 ›› Issue (9): 93201-093201.doi: 10.1088/1674-1056/27/9/093201

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

Effect of elliptical polarizations on nonsequential double ionization in two-color elliptically polarized laser fields

Tong-Tong Xu(徐彤彤), Jia-He Chen(陈佳贺), Xue-Fei Pan(潘雪飞), Hong-Dan Zhang(张宏丹), Shuai Ben(贲帅), Xue-Shen Liu(刘学深)   

  1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
  • 收稿日期:2018-05-25 修回日期:2018-06-21 出版日期:2018-09-05 发布日期:2018-09-05
  • 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, China (Grant No. 20180101225JC).

Effect of elliptical polarizations on nonsequential double ionization in two-color elliptically polarized laser fields

Tong-Tong Xu(徐彤彤), Jia-He Chen(陈佳贺), Xue-Fei Pan(潘雪飞), Hong-Dan Zhang(张宏丹), Shuai Ben(贲帅), Xue-Shen Liu(刘学深)   

  1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
  • Received:2018-05-25 Revised:2018-06-21 Online:2018-09-05 Published:2018-09-05
  • 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, China (Grant No. 20180101225JC).

摘要:

Using the classical ensemble model, we investigate the nonsequential double ionization (NSDI) of Ar and Mg in the two-color elliptically polarized laser pulse for different elliptical polarizations. Numerical results show that for Ar atoms the NSDI yield increases as the ellipticity increases, which is different from the case of Mg atoms. Moreover, the correlated behavior in the correlated electron momentum along the x direction and ion momentum distributions of Ar atoms are influenced by the ellipticity. By statistical analysis of different times, we can conclude that the ellipticity may be responsible for the NSDI processes. The correlated momenta distributions along the x direction at the recollision time are demonstrated and the results show that the travelling time and ellipticity can affect the emitted directions of both electrons.

关键词: nonsequential double ionization, two-color elliptically polarized laser pulse, ellipticity, momentum distributions

Abstract:

Using the classical ensemble model, we investigate the nonsequential double ionization (NSDI) of Ar and Mg in the two-color elliptically polarized laser pulse for different elliptical polarizations. Numerical results show that for Ar atoms the NSDI yield increases as the ellipticity increases, which is different from the case of Mg atoms. Moreover, the correlated behavior in the correlated electron momentum along the x direction and ion momentum distributions of Ar atoms are influenced by the ellipticity. By statistical analysis of different times, we can conclude that the ellipticity may be responsible for the NSDI processes. The correlated momenta distributions along the x direction at the recollision time are demonstrated and the results show that the travelling time and ellipticity can affect the emitted directions of both electrons.

Key words: nonsequential double ionization, two-color elliptically polarized laser pulse, ellipticity, momentum distributions

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)