Double ionization of helium interacting with elliptically polarized laser pulse by classical ensemble simulations

doi:10.1088/1674-1056/19/2/023201

中国物理B ›› 2010, Vol. 19 ›› Issue (2): 23201-023201.doi: 10.1088/1674-1056/19/2/023201

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Double ionization of helium interacting with elliptically polarized laser pulse by classical ensemble simulations

于伟威, 郭静, 刘学深

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

收稿日期:2008-12-28 修回日期:2009-03-09 出版日期:2010-02-15 发布日期:2010-02-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10974068 and 10574057).

Double ionization of helium interacting with elliptically polarized laser pulse by classical ensemble simulations

Yu Wei-Wei(于伟威),Guo Jing(郭静), and Liu Xue-Shen(刘学深)^†

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

Received:2008-12-28 Revised:2009-03-09 Online:2010-02-15 Published:2010-02-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10974068 and 10574057).

摘要/Abstract

摘要： This paper uses the classical ensemble method to study the double ionization of a 2-dimensional (2D) model helium atom interacting with an elliptically polarized laser pulse. The classical ensemble calculation demonstrates that the ratio of double to single ionization decreases with the increasing ellipticity of the driving field. The classical scenario shows that there are hardly any e--e recollisions with the circularly polarized laser pulse. The double ionization probability is studied for linearly and circularly polarized laser pulses. The classical numerical results are consistent with the semiclassical rescattering mechanism and in agreement with the experimental results and the quantum calculations qualitatively.

Abstract: This paper uses the classical ensemble method to study the double ionization of a 2-dimensional (2D) model helium atom interacting with an elliptically polarized laser pulse. The classical ensemble calculation demonstrates that the ratio of double to single ionization decreases with the increasing ellipticity of the driving field. The classical scenario shows that there are hardly any e--e recollisions with the circularly polarized laser pulse. The double ionization probability is studied for linearly and circularly polarized laser pulses. The classical numerical results are consistent with the semiclassical rescattering mechanism and in agreement with the experimental results and the quantum calculations qualitatively.

Key words: classical ensemble method, nonsequential double ionization, ellipticity dependence

中图分类号: (Photoionization of atoms and ions)

32.80.Fb

31.15.-p (Calculations and mathematical techniques in atomic and molecular physics)

于伟威, 郭静, 刘学深. Double ionization of helium interacting with elliptically polarized laser pulse by classical ensemble simulations[J]. 中国物理B, 2010, 19(2): 23201-023201.

Yu Wei-Wei(于伟威),Guo Jing(郭静), and Liu Xue-Shen(刘学深). Double ionization of helium interacting with elliptically polarized laser pulse by classical ensemble simulations[J]. Chin. Phys. B, 2010, 19(2): 23201-023201.

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Double ionization of helium interacting with elliptically polarized laser pulse by classical ensemble simulations

Double ionization of helium interacting with elliptically polarized laser pulse by classical ensemble simulations

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