Symmetric Electron Vortices of Hydrogen Ionized by Orthogonal Elliptical Fields

Symmetric Electron Vortices of Hydrogen Ionized by Orthogonal Elliptical Fields
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正交椭圆场电离氢的对称电子涡旋

DOI:
10.1109/jphot.2018.2854237
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发表时间:
2018-08
影响因子:
2.4
通讯作者:
Jianquan Yao
Jianquan Yao
中科院分区:
工程技术4区
文献类型:
--
作者:
Meng Li;Guizhong Zhang;Xin Ding;Jianquan Yao

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本文报道了我们对两个正交的椭圆偏振阿秒延时脉冲作用下氢原子光电离的数值研究,发现动量分布呈现螺旋结构。利用强场近似理论得到了谱图,并根据重叠场的不规则性进行了分析。产生的涡旋臂的一些形态特征被发现是敏感的椭圆度和时间延迟的两个阿秒脉冲。这些现象可以用来研究光电离和复偏振超短脉冲的本征特性。
In this paper, we report our numerical investigation on the photoionization of hydrogen by two orthogonal elliptically polarized and time-delayed attosecond pulses; we found that the momentum distributions exhibit a helical structure. The spectral patterns were obtained by making the use of the strong field approximation theory, and analyzed in terms of the irregularity of the overlapped fields. Some morphological characteristics of the generated vortex arms were found to be sensitive to the ellipticity and time delay of the two attosecond pulses. These phenomena could be used to investigate the intrinsic features of the photoionizaiton and complex polarized ultrashort pulses.
阿秒脉冲载波包络相位对电离电子动量和能量分布的影响:频率、强度和附加红外脉冲的作用
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