Above-threshold detachment of negative ions by circularly polarized few-cycle laser fields

被引:0
|
作者
Bai, Lihua [1 ]
Liu, Yuheng [1 ]
Cui, Tingting [1 ]
Wang, Yan [1 ]
Deng, Dongmei [1 ]
Zhang, Huifang [1 ]
机构
[1] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China
基金
中国国家自然科学基金;
关键词
GENERALIZED PSEUDOSPECTRAL METHOD; MULTIPHOTON DETACHMENT; H-ION; PHOTODETACHMENT; PULSES;
D O I
10.3788/COL201109.010202
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In accordance with nonperturbative quantum scattering theory, we investigate photoelectron angular distributions (PADs) from above-threshold detachment (ATD) of negative ions irradiated by circularly polarized few-cycle laser fields. Electrons ejected on the polarization plane demonstrate distinct anisotropies in angular distributions which distinctly vary with the carrier-envelope (CE) phase. The anisotropy is caused by interference between transition channels; it also depends strongly on laser frequency, pulse duration, and kinetic energy of photoelectrons. Optimal emission of photoelectrons, which varies with CE phase, makes it possible to control photoelectron motion.
引用
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页数:4
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