Dynamics of Strong-Field Double Ionization in Two-Color Counterrotating Fields

被引：90
|
作者：
Chaloupka, Jan L. [1 ]
Hickstein, Daniel D. [2 ,3 ]
机构：
[1] Univ No Colorado, Dept Phys & Astron, Greeley, CO 80639 USA
[2] Univ Colorado, JILA, Dept Phys, Boulder, CO 80309 USA
[3] NIST, Boulder, CO 80309 USA
来源：
PHYSICAL REVIEW LETTERS | 2016年 / 116卷 / 14期
关键词：
HIGH-HARMONIC-GENERATION; MULTIPHOTON IONIZATION; HELIUM; POLARIZATION; DIFFRACTION;
D O I：
10.1103/PhysRevLett.116.143005
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The double ionization of helium in bichromatic, circularly polarized intense laser fields is analyzed with a classical ensemble approach. It is found that counterrotating fields produce significant nonsequential double-ion yield and drive novel ionization dynamics. It is shown that distinct pathways to ionization can be modified by altering the relative intensities of the two colors, allowing for unique control of strong-field processes. Electrons are observed to return to the ion at different angles from the angle of ionization, opening new possibilities for probing electronic and molecular structure on the ultrafast time scale.
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收藏
页数：5
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