Journal
NATURE PHOTONICS
Volume 14, Issue 1, Pages 30-+Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41566-019-0549-5
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Funding
- US Department of Energy [DE-AC02-76SF00515, DE-AC02-06CH11357]
- DOE-BES Accelerator and detector research program [100317]
- DOE-BES, Chemical Sciences, Geosciences, and Biosciences Division
- Department of Energy, Laboratory Directed Research and Development program at SLAC National Accelerator Laboratory [DE-AC02-76SF00515]
- BACATEC programme
- DFG [KL-1439/10]
- Max Planck Society
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [328961117 SFB 1319 ELCH]
- EPSRC [EP/R019509/1]
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The quantum-mechanical motion of electrons in molecules and solids occurs on the sub-femtosecond timescale. Consequently, the study of ultrafast electronic phenomena requires the generation of laser pulses shorter than 1 fs and of sufficient intensity to interact with their target with high probability. Probing these dynamics with atomic-site specificity requires the extension of sub-femtosecond pulses to the soft X-ray spectral region. Here, we report the generation of isolated soft X-ray attosecond pulses with an X-ray free-electron laser. Our source has a pulse energy that is millions of times larger than any other source of isolated attosecond pulses in the soft X-ray spectral region, with a peak power exceeding 100 GW. This unique combination of high intensity, high photon energy and short pulse duration enables the investigation of electron dynamics with X-ray nonlinear spectroscopy and single-particle imaging, unlocking a path towards a new era of attosecond science. The generation of ultrashort X-ray pulses with a peak power exceeding 100 GW offers new opportunities for studying electron dynamics with nonlinear spectroscopy and single-particle imaging.
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