Numerical time-of-flight analysis of the strong-field photoeffect
Numerical time-of-flight analysis of the strong-field photoeffect
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DOI：
10.1103/physrevresearch.2.043083
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发表时间：
2020-08
期刊：
影响因子：
--
通讯作者：
V. Tulsky;D. Bauer
中科院分区：
文献类型：
--
作者：
V. Tulsky;D. Bauer
从含时薛定谔方程（TDSE）的数值解中直接提取的光电离振幅的短时滤波被用来识别在强场中形成光电子谱的主导路径.因此，克服了仅给出最终频谱的TDSE求解器的“黑箱性质”，并且可以使用更简单的方法，例如，半经典的强场近似的基础上，可以测试和改进。该方法还允许抑制路径之间的周期间量子干涉，从而去除通常在实验中被洗掉的模式。
Short-time filtering of the photoionization amplitude extracted straight from the numerical solution of the time-dependent Schr\"{o}dinger equation (TDSE) is used to identify dominant pathways that form photoelectron spectra in strong fields. Thereby, the "black-box nature" of TDSE solvers only giving the final spectrum is overcome, and simpler approaches, e.g., semi-classical based on the strong-field approximation, can be tested and improved. The approach also allows to suppress intercycle quantum interference between pathways removing patterns that are usually washed out in experiments.