Attosecond Time-Resolved Imaging of Molecular Structure by Photoelectron Holography
Attosecond Time-Resolved Imaging of Molecular Structure by Photoelectron Holography
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DOI：
10.1103/physrevlett.108.263003
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发表时间：
2012-06-27
影响因子：
8.6
通讯作者：
Bandrauk, Andre D.
中科院分区：
文献类型：
--
作者：
Bian, Xue-Bin;Bandrauk, Andre D.
利用阿秒光电子全息技术研究了H-2（+）分子结构的动态成像。在阿秒光电子全息术中，直接（参考）和反向散射（信号）光电子之间的干涉揭示了两个通道的诞生时间和分子结构的空间信息。用半经典模型和相应的时间依赖薛定谔方程的数值解进行了模拟，证实了这一点，提出了一种阿秒时间分辨的方法来成像激光诱导电离电子重散射得到的分子结构。结果表明，从动量分布可以成像短和长重散射电子轨迹。
Dynamic imaging of the molecular structure of H-2(+) is investigated by attosecond photoelectron holography. The interference between direct (reference) and backward rescattered (signal) photoelectrons in attosecond photoelectron holography reveals the birth time of both channels and the spatial information of molecular structure. This is confirmed by simulations with a semiclassical model and numerical solutions of the corresponding time-dependent Schrodinger equation, suggesting an attosecond time-resolved way of imaging molecular structure obtained from laser induced rescattering of ionized electrons. It is shown that both short and long rescattered electron trajectories can be imaged from the momentum distribution.