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| Home > Publications database > Experimental Demonstration of Attosecond Pump-Probe Spectroscopy with an X-ray Free-Electron Laser |
| Journal Article | PUBDB-2023-02985 |
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2024
Nature Publ. Group
London [u.a.]
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Please use a persistent id in citations: doi:10.1038/s41566-024-01419-w
Abstract: Pump–probe experiments with subfemtosecond resolution are the key to understanding electronic dynamics in quantum systems. Here we demonstrate the generation and control of subfemtosecond pulse pairs from a two-colour X-ray free-electron laser. By measuring the delay between the two pulses with an angular streaking diagnostic, we characterize the group velocity of the X-ray free-electron laser and show control of the pulse delay down to 270 as. We confirm the application of this technique to a pump–probe measurement in core-ionized para-aminophenol. These results reveal the ability to perform pump–probe experiments with subfemtosecond resolution and atomic site specificity.
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