Near-Forward Rescattering Photoelectron Holography in Strong-Field Ionization: Extraction of the Phase of the Scattering Amplitude.
Near-Forward Rescattering Photoelectron Holography in Strong-Field Ionization: Extraction of the Phase of the Scattering Amplitude.
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DOI：
10.1103/physrevlett.116.173001
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发表时间：
2016-04
影响因子：
8.6
通讯作者：
Yueming Zhou;O. Tolstikhin;T. Morishita
中科院分区：
文献类型：
--
作者：
Yueming Zhou;O. Tolstikhin;T. Morishita
本文重新讨论了Y。Huismans等人[Science 331，61（2011）]。利用最近发展起来的绝热理论，说明了强激光脉冲电离原子和分子时产生的光电子动量分布（PEMD）中，母离子对电离电子近前向再散射的散射振幅的相位是如何被编码并从相应的干涉图样中读出的。提出了一种提取相位的方法。它的应用PEMD通过求解模型原子的含时薛定谔方程得到的结果与散射计算吻合得很好。这建立了一个新的一般方法来提取结构信息的强场观测能够提供超快过程的时间分辨成像。
We revisit the concept of near-forward rescattering strong-field photoelectron holography introduced by Y. Huismans et al. [Science 331, 61 (2011)]. The recently developed adiabatic theory is used to show how the phase of the scattering amplitude for near-forward rescattering of an ionized electron by the parent ion is encoded in and can be read out from the corresponding interference pattern in photoelectron momentum distributions (PEMDs) produced in the ionization of atoms and molecules by intense laser pulses. A procedure to extract the phase is proposed. Its application to PEMDs obtained by solving the time-dependent Schrödinger equation for a model atom yields results in good agreement with scattering calculations. This establishes a novel general approach to extracting structural information from strong-field observables capable of providing time-resolved imaging of ultrafast processes.