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arXiv 1709.05973physics.atom-ph
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库仑校正光电子全息中量子干涉的解析条件

Analytic quantum-interference conditions in Coulomb corrected photoelectron holography

A. S. Maxwell, A. Al-Jawahiry, X. Y. Lai, C. Figueira de Morisson Faria

备注：
28 pages, 10 figures. The figures have been simplified in order to comply with the arXiV size requirements
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摘要：

我们提供了阈值以上电离（ATI）跃迁几率和光电子角分布（PAD）的近似解析表达式。这些解析表达式比现有文献中的那些更一般，并包括在电子连续传输的剩余结合势。他们成功地再现了ATI旁瓣和特定的全息结构，如近阈值的扇形图案和蜘蛛状结构，延伸到相对较高的光电子能量。我们比较了这些表达式与库仑量子轨道强场近似（CQSFA）和完整的解决方案的时间相关的薛定谔方程不同的驱动场的频率和强度，并提供了一个深入的分析背后的特定的全息结构的物理机制。我们的研究结果进一步阐明了CQSFA的哪些方面必须优先考虑，以获得关键的全息特征，并突出了前向散射轨迹的重要性。此外，我们发现，全息图案的变化显着不同的字段参数，即使凯尔迪什参数保持大致相同。

英文摘要：

We provide approximate analytic expressions for above-threshold ionization (ATI) transition probabilities and photoelectron angular distributions (PADs). These analytic expressions are more general than those existing in the literature and include the residual binding potential in the electron continuum propagation. They successfully reproduce the ATI side lobes and specific holographic structures such as the near-threshold fan-shaped pattern and the spider-like structure that extends up to relatively high photoelectron energies. We compare such expressions with the Coulomb quantum orbit strong-field approximation (CQSFA) and the full solution of the time-dependent Schrödinger equation for different driving-field frequencies and intensities, and provide an in-depth analysis of the physical mechanisms behind specific holographic structures. Our results shed additional light on what aspects of the CQSFA must be prioritized in order to obtain the key holographic features, and highlight the importance of forward scattered trajectories. Furthermore, we find that the holographic patterns change considerably for different field parameters, even if the Keldysh parameter is kept roughly the same.

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