期刊
PHYSICAL REVIEW A
卷 89, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.89.031401
关键词
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资金
- Triangle de la Physique network [2008-046T, 2009-008T, 2011-069T]
- French ANR ATTOWAVE [ANR-09-BLAN-0031-01]
- Agence Nationale de la Recherche (ANR) [ANR-09-BLAN-0031] Funding Source: Agence Nationale de la Recherche (ANR)
We have analyzed the angular distributions of the photoelectrons emitted upon photoionization of rare gases by a comb of harmonics in the extreme ultraviolet range, in the presence of a dressing infrared (IR) field with controlled delay tau, stabilized down to about +/-60 as. The measurements have been performed with the help of the coincidence momentum imaging technique. We evidence marked differences in the measured angular distributions of the photoelectrons, depending on the number of IR photons exchanged. Joined to a theoretical interpretation, these observations bring new insights into the dynamics of this class of two-color photoionization processes that are a key step towards studying photoionization in the time domain, with attosecond time resolution.
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