Forthcoming Events

29.01.2020 - 31.01.2020, ETH Hönggerberg, Zürich
29.01.2020 - 31.01.2020, DESY-Hamburg and European XFEL, Schenefeld, Germany
01.02.2020 - 02.02.2020, Renaissance Tuscany Il Ciocco, Lucca, Italy

News

Ruth Signorell receives the Humboldt Prize- awarded in recognition of outstanding achievements in research and teaching
New scientific highlights- by MUST PIs Keller, Chergui, Richardson / Vanicek, Wörner, Castiglioni / Osterwalder / Hengsberger / van Bokhoven
Ursula Keller wins the SPIE 2020 Gold Medal- awarded in recognition of outstanding engineering or scientific accomplishments
Nobel Prize winner Gerard Mourou - Physics Colloquium 11.12.19: Passion Extreme Light
Paths to a professorship – 23 interviews
New scientific highlights- by MUST PIs Peter Hamm, Ursula Keller, Jörg Standfuss, and Fabrizio Carbone

Thomas Feurer and co-workers: Precision measurement of relative X-ray arrival time for FELs

July 27, 2014

Sub-femtosecond precision measurement of relative X-ray arrival time for free-electron lasers


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.

Publication: N. Hartmann et al. (2014) Sub-femtosecond precision measurement of relative X-ray arrival time for free-electron lasers, Nat. Photonics 8, 706-709 (10.1038/nphoton.2014.164)



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