Time-domain measurement of a self-amplified spontaneous emission free-electron laser with an energy-chirped electron beam and undulator tapering

G. Marcus, M. Artioli, A. Bacci, M. Bellaveglia, E. Chiadroni, A. Cianchi, F. Ciocci, M. Del Franco, G. Di Pirro, M. Ferrario, D. Filippetto, G. Gatti, L. Giannessi, M. Labat, A. Mostacci, A. Petralia, V. Petrillo, M. Quattromini, J.V. Rau, A.R. RossiJ.B. Rosenzweig

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Abstract

We report, with an unequivocal time-domain measurement, that an appropriately chosen undulator taper can compensate for an electron beam longitudinal energy-chirp in a free-electron laser amplifier, leading to the generation of single-spike radiation close to the Fourier limit. The measurements were taken using the frequency-resolved optical gating technique by employing an advanced transient-grating diagnostic geometry. The reconstructed longitudinal radiation characteristics are compared in detail to prediction from time-dependent three-dimensional simulations. © 2012 American Institute of Physics.
Original languageEnglish
Article number134102
Pages (from-to)-
JournalApplied Physics Letters
Volume101
Issue number13
DOIs
Publication statusPublished - 24 Sep 2012
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Marcus, G., Artioli, M., Bacci, A., Bellaveglia, M., Chiadroni, E., Cianchi, A., ... Rosenzweig, J. B. (2012). Time-domain measurement of a self-amplified spontaneous emission free-electron laser with an energy-chirped electron beam and undulator tapering. Applied Physics Letters, 101(13), -. [134102]. https://doi.org/10.1063/1.4754612