Attosecond Coherence Time Characterization in Hard X-Ray Free-Electron Laser
SCIE
SCOPUS
- Title
- Attosecond Coherence Time Characterization in Hard X-Ray Free-Electron Laser
- Authors
- Zhou G.; Decker F.-J.; Ding Y.; Jiao Y.; Lutman A.A.; Maxwell T.J.; Raubenheimer T.O.; Wang J.; Holman A.J.; Tsai C.-Y.; Wu J.Y.; Wu W.; Yang C.; Yoon M.; Wu J.
- Date Issued
- 2020-04
- Publisher
- NATURE PUBLISHING GROUP
- Abstract
- One of the key challenges in scientific researches based on free-electron lasers (FELs) is the characterization of the coherence time of the ultra-fast hard x-ray pulse, which fundamentally influences the interaction process between x-rays and materials. Conventional optical methods, based on autocorrelation, are very difficult to realize due to the lack of mirrors. Here, we experimentally demonstrate a novel method which yields a coherence time of 174.7 attoseconds for the 6.92 keV FEL pulses at the Linac Coherent Light Source. In our experiment, a phase shifter is adopted to control the cross-correlation between x-ray and microbunched electrons. This approach provides critical diagnostics for the temporal coherence of x-ray FELs and is universal for general machine parameters; applicable for wide range of photon energy, radiation brightness, repetition rate and FEL pulse duration.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/107899
- DOI
- 10.1038/s41598-020-60328-4
- ISSN
- 2045-2322
- Article Type
- Article
- Citation
- SCIENTIFIC REPORTS, vol. 10, no. 1, 2020-04
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- There are no files associated with this item.
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