Characterization of ultrafast free-electron laser pulses using extreme-ultraviolet transient gratings

Capotondi, F.; Foglia, L.; Kiskinova, M.; Masciovecchio, C.; Mincigrucci, R.; Naumenko, D.; Pedersoli, E.; Simoncig, A.; Bencivenga, F.

doi:10.1107/S1600577517015612

Journal of Synchrotron Radiation Journal of
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Figure 5
(a) XTG data obtained by scanning Δt_FF at Δt_opt = 0 on Si₃N₄ at different values of I_FEL, as indicated in the figure legend. (b) Sketch of the XTG experiment carried out in the twin-seed mode on a diamond sample; $[\Delta{t}^{\,\ast}]$ is the time delay between the two FEL pulses. (c) XTG data obtained by scanning Δt_FF at Δt_opt = 0; the blue line is the sum of two Gaussian functions with FWHM of 60 fs, separated by 270 fs time delay and with a 0.1 intensity ratio.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 25| Part 1| January 2018| Pages 32-38

https://doi.org/10.1107/S1600577517015612

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