期刊
SCIENTIFIC REPORTS
卷 11, 期 1, 页码 -出版社
NATURE RESEARCH
DOI: 10.1038/s41598-020-79805-x
关键词
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资金
- Minerva Foundation
- Israeli Science Foundation
- Crown Center of Photonics
- European Research Council
- Zuckerman STEM Leadership Program
- Koshland Foundation
This paper provides a direct insight into the Coulomb interaction between a photoelectron and its parent ion, resolving the phase accumulated by the laser-driven electron with attosecond precision. The results reveal a strong laser-Coulomb coupling beyond the standard recollision picture, showing Coulomb-induced delays of the electrons along their trajectories that vary by tens of attoseconds with the laser field intensity.
The Coulomb interaction between a photoelectron and its parent ion plays an important role in a large range of light-matter interactions. In this paper we obtain a direct insight into the Coulomb interaction and resolve, for the first time, the phase accumulated by the laser-driven electron as it interacts with the Coulomb potential. Applying extreme-ultraviolet interferometry enables us to resolve this phase with attosecond precision over a large energy range. Our findings identify a strong laser-Coulomb coupling, going beyond the standard recollision picture within the strong-field framework. Transformation of the results to the time domain reveals Coulomb-induced delays of the electrons along their trajectories, which vary by tens of attoseconds with the laser field intensity.
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