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Spatial molecular interferometry via multidimensional high-harmonic spectroscopy
Nature Photonics ( IF 35.0 ) Pub Date : 2020-02-10 , DOI: 10.1038/s41566-019-0584-2
Ayelet J. Uzan , Hadas Soifer , Oren Pedatzur , Alex Clergerie , Sylvain Larroque , Barry D. Bruner , Bernard Pons , Misha Ivanov , Olga Smirnova , Nirit Dudovich

Interferometry is a basic tool to resolve coherent properties in a wide range of light or matter wave phenomena. In the strong-field regime, interferometry serves as a fundamental building block in revealing ultrafast electron dynamics. In this work we manipulate strong-field-driven electron trajectories and probe the coherence of a molecular wavefunction by inducing an interferometer on a microscopic level. The two arms of the interferometer are controlled by a two-colour field, while the interference pattern is read via advanced, three-dimensional high-harmonic spectroscopy. This scheme recovers the spectral phase information associated with the structure of molecular orbitals, as well as the spatial properties of the interaction itself. Zooming into one of the most fundamental strong-field phenomena—field-induced tunnel ionization—we reconstruct the angle at which the electronic wavefunction tunnels through the barrier and follow its evolution with attosecond precision.



中文翻译:

多维高谐波光谱的空间分子干涉法

干涉仪是解决广泛的光波或物质波现象中相干特性的基本工具。在强场条件下,干涉测量法是揭示超快电子动力学的基础。在这项工作中,我们操纵强场驱动的电子轨迹,并通过在微观水平上诱导干涉仪来探测分子波函数的相干性。干涉仪的两个臂由一个双色场控制,而干涉图则通过先进的三维高谐波光谱法读取。该方案可恢复与分子轨道结构相关的光谱相位信息,以及相互作用本身的空间特性。

更新日期:2020-02-10
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