Time-Resolved Holography with Photoelectrons
Time-Resolved Holography with Photoelectrons
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DOI：
10.1126/science.1198450
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发表时间：
2011-01-07
期刊：
影响因子：
56.9
通讯作者：
Vrakking, M. J. J.
中科院分区：
文献类型：
--
作者：
Huismans, Y.;Rouzee, A.;Vrakking, M. J. J.
电离是原子和分子对强激光场的主要响应，是多种重要技术的基础，例如产生可实时测量电子运动的阿秒脉冲。我们展示了利用自由电子激光器发出的 7 微米强激光脉冲电离亚稳态氙原子的实验。观察到全息结构在亚激光周期时间尺度上记录了潜在的电子动力学，使得光电子能谱的时间分辨率比电离脉冲的持续时间高出几乎两个数量级。
Ionization is the dominant response of atoms and molecules to intense laser fields and is at the basis of several important techniques, such as the generation of attosecond pulses that allow the measurement of electron motion in real time. We present experiments in which metastable xenon atoms were ionized with intense 7-micrometer laser pulses from a free-electron laser. Holographic structures were observed that record underlying electron dynamics on a sublaser-cycle time scale, enabling photoelectron spectroscopy with a time resolution of almost two orders of magnitude higher than the duration of the ionizing pulse.