Abstract ↗AI summary
The abstract is read at the publisher; the summary is JClub's.
Attosecond hard X-ray pulses from an X-ray free-electron laser are metrologed with 170 as average duration and attosecond synchronization, enabling time-domain control of pulse coherence.
- Why it matters: Precise spatiotemporal pulse metrology is missing for hard X-ray attosecond experiments, limiting direct observation and systematic time-resolved studies of electron motion in matter.
- What they did: Using a broadband X-ray split-delay line, field-correlation measurements characterize pulse coherence time and attosecond synchronization, while non-sequential two-photon absorption provides time-domain intensity autocorrelation.
- The result: The tools enable systematic attosecond time-resolved experiments such as X-ray pump–X-ray probe spectroscopy and diffraction, supporting probing of electronic phenomena with unprecedented spatial-temporal resolution.
The findingWhy it mattersWhat they didThe result
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