Spatiotemporal imaging of valence electron motion

M. Kübel (), Z. Dube, A. Yu. Naumov, D. M. Villeneuve, P. B. Corkum and A. Staudte ()
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M. Kübel: National Research Council and University of Ottawa
Z. Dube: National Research Council and University of Ottawa
A. Yu. Naumov: National Research Council and University of Ottawa
D. M. Villeneuve: National Research Council and University of Ottawa
P. B. Corkum: National Research Council and University of Ottawa
A. Staudte: National Research Council and University of Ottawa

Nature Communications, 2019, vol. 10, issue 1, 1-7

Abstract: Abstract Electron motion on the (sub-)femtosecond time scale constitutes the fastest response in many natural phenomena such as light-induced phase transitions and chemical reactions. Whereas static electron densities in single molecules can be imaged in real space using scanning tunnelling and atomic force microscopy, probing real-time electron motion inside molecules requires ultrafast laser pulses. Here, we demonstrate an all-optical approach to imaging an ultrafast valence electron wave packet in real time with a time-resolution of a few femtoseconds. We employ a pump-probe-deflect scheme that allows us to prepare an ultrafast wave packet via strong-field ionization and directly image the resulting charge oscillations in the residual ion. This approach extends and overcomes limitations in laser-induced orbital imaging and may enable the real-time imaging of electron dynamics following photoionization such as charge migration and charge transfer processes.

Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09036-w

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DOI: 10.1038/s41467-019-09036-w

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