Carrier-envelope phase mapping in laser-induced electron diffraction
Carrier-envelope phase mapping in laser-induced electron diffraction
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激光诱导电子衍射中的载流子包络相位映射
DOI：
10.1103/physreva.94.033417
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
and Jiro Itatani
中科院分区：
文献类型：
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作者：
Henning Geiseler;Nobuhisa Ishii;Keisuke Kaneshima;Florian Geier;Teruto Kanai;Oleg I. Tolstikhin;Toru Morishita;and Jiro Itatani
我们使用波形控制的少周期脉冲，对氩、氪和氙母离子上光电子的弹性微分散射截面 (DCS) 进行激光诱导电子衍射测量。仅考虑截止电子并采用绝热理论进行分析使我们能够消除从实验光谱中提取 DCS 时的歧义。与之前主要关注 DCS 的角度依赖性的工作相反，我们的方法还允许我们提取其对散射动量的依赖性。以氙气为例，我们演示了如何使用该方法在由脉冲确定的一系列变量中获得 DCS 的完整角度和动量依赖性。将获得的结果与基于单活性电子近似的理论计算进行比较，显示出高度的一致性。当更先进的理论模型可用时，进一步的研究可能会提供研究多电子效应的机会。
We present laser-induced electron diffraction measurements of elastic differential scattering cross sections (DCSs) of a photoelectron on the parent ion for argon, krypton, and xenon, using waveform-controlled few-cycle pulses. Considering only cutoff electrons and employing the adiabatic theory for the analysis enables us to eliminate ambiguities in extracting the DCSs from experimental spectra. Contrary to previous works, which mainly focused on the angular dependence of the DCS, our method allows us to extract also its dependence on the scattering momentum. In the case of xenon, we demonstrate how this method can be used to obtain the complete angular and momentum dependence of the DCS in a range of these variables determined by the pulse. The obtained results are compared to theoretical calculations based on the single-active-electron approximation, which shows a high level of agreement. Further investigations may provide opportunities to study multielectron effects when more advanced theoretical models become available.