An ultrashort pulse ultra-violet radiation undulator source driven by a laser plasma wakefield accelerator

Maria Pia Anania, Enrico Brunetti, Mark Wiggins, David William Grant, Gregor H. Welsh, Riju Issac, Silvia Cipiccia, Richard Shanks, Grace Manahan, Constantin Aniculaesei, S.B. van der Geer, M. J. de Loos, M.W. Poole, B. J. A. Shepherd, J.A. Clarke, W.A. Gillespie, A.M. MacLeod, Dino Jaroszynski

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Narrow band undulator radiation tuneable over the wavelength range of 150–260 nm has been produced by short electron bunches from a 2 mm long laser plasma wakefield accelerator based on a 20 TW femtosecond laser system. The number of photons measured is up to 9 × 106 per shot for a 100 period undulator, with a mean peak brilliance of 1 × 1018 photons/s/mrad2/mm2/0.1% bandwidth. Simulations estimate that the driving electron bunch r.m.s. duration is as short as 3 fs when the electron beam has energy of 120–130 MeV with the radiation pulse duration in the range of 50–100 fs.
Original languageEnglish
Article number264102
Number of pages5
JournalApplied Physics Letters
Issue number26
Early online date1 Jul 2014
Publication statusPublished - 2014


  • electron beams
  • laser plasma acceleration
  • undulator radiation
  • ultrashort pulse
  • ultra-violet radiation
  • undulator
  • laser plasma wakefield accelerator

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