We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Sub-femtosecond precision measurement of relative X-ray arrival time for free-electron lasers.
- Authors
Hartmann, N.; Helml, W.; Galler, A.; Bionta, M. R.; Grünert, J.; L. Molodtsov, S.; Ferguson, K. R.; Schorb, S.; Swiggers, M. L.; Carron, S.; Bostedt, C.; Castagna, J.-C.; Bozek, J.; Glownia, J. M.; Kane, D. J.; Fry, A. R.; White, W. E.; Hauri, C. P.; Feurer, T.; Coffee, R. N.
- Abstract
Today's brightest coherent X-ray sources, X-ray free-electron lasers, produce ultrafast X-ray pulses for which full-width at half-maximum durations as short as 3 fs have been measured. There has been a marked increase in the popularity of such short pulses now that optical timing techniques have begun to report an X-ray/optical delay below ∼10 fs r.m.s. errors. As a result, sub-10 fs optical pulses have been implemented at the Linac Coherent Light Source (LCLS) X-ray beamlines, thus warranting a push to reduce the error in X-ray/optical delay measurements to the 1 fs level. Here, we report a unique two-dimensional spectrogram measurement of the relative X-ray/optical delay. This easily scalable relative delay measurement already surpasses previous techniques by an order of magnitude with its sub-1 fs temporal resolution and opens up the prospect of time-resolved X-ray measurements to the attosecond community.
- Subjects
FEMTOSECOND pulses; PRECISION (Information retrieval); FREE electron lasers; OPTICAL delay lines; ATTOSECOND pulses
- Publication
Nature Photonics, 2014, Vol 8, Issue 9, p706
- ISSN
1749-4885
- Publication type
Article
- DOI
10.1038/nphoton.2014.164