Setting the photoelectron clock through molecular alignment
Setting the photoelectron clock through molecular alignment
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DOI：
10.1038/s41467-020-16270-0
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发表时间：
2018-02
影响因子：
16.6
通讯作者：
A. Trabattoni;J. Wiese;Umberto de Giovannini;Jean-François Olivieri;T. Mullins;J. Onvlee;S. Son;B. Frusteri;Á. Rubio;S. Trippel;J. Küpper
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作者：
A. Trabattoni;J. Wiese;Umberto de Giovannini;Jean-François Olivieri;T. Mullins;J. Onvlee;S. Son;B. Frusteri;Á. Rubio;S. Trippel;J. Küpper
强激光场与物质的相互作用本质上为具有极高时空分辨率的瞬态动力学成像提供了强大的工具。在这里，我们研究了激光排列分子的强场电离，并展示了激光场和分子相互作用联合作用下的光电子动力学的完整实时图像。我们证明该分子对整体强场动力学具有巨大影响：它为具有给定重散射动能的电子发射设定了时钟。这一结果代表了分子框架强场物理的开创性陈述的基准，并对自衍射实验的解释产生了重大影响。此外，分子框架光电子动量分布中时间-能量关系的编码显示了实时探测分子势的方法，并更深入地了解强场相互作用期间的电子传输。
The interaction of strong laser fields with matter intrinsically provides a powerful tool for imaging transient dynamics with an extremely high spatiotemporal resolution. Here, we study strong-field ionisation of laser-aligned molecules, and show a full real-time picture of the photoelectron dynamics in the combined action of the laser field and the molecular interaction. We demonstrate that the molecule has a dramatic impact on the overall strong-field dynamics: it sets the clock for the emission of electrons with a given rescattering kinetic energy. This result represents a benchmark for the seminal statements of molecular-frame strong-field physics and has strong impact on the interpretation of self-diffraction experiments. Furthermore, the resulting encoding of the time-energy relation in molecular-frame photoelectron momentum distributions shows the way of probing the molecular potential in real-time, and accessing a deeper understanding of electron transport during strong-field interactions.