An XUV-FEL amplifier seeded using high harmonic generation

B W J McNeil, J A Clarke, D J Dunning, G J Hirst, H L Owen, N R Thompson, B Sheehy, P H Williams

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33 Citations (Scopus)
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A detailed design of a free electron laser ( FEL) amplifier operating in the extreme ultra violet ( XUV) and seeded directly by a high harmonic source is presented. The design is part of the 4th generation light source ( 4GLS) facility proposed for the Daresbury Laboratory in the UK which will offer users a suite of high brightness synchronised sources from THz frequencies into the XUV. The XUV-FEL will generate photons with tunable energies from 8 to 100 eV at giga-watt peak power levels in near Fourier-transform limited pulses of variable polarisation. The designs of the high harmonic generation ( HHG) seeding, FEL amplifier and synchronising systems are presented. Numerical simulations quantify the FEL output characteristics.
Original languageEnglish
Article number82
Number of pages32
JournalNew Journal of Physics
Publication statusPublished - 3 Apr 2007


  • free electron lasers
  • accelerators
  • electromagnetism
  • beams
  • extreme ultra violet
  • high harmonic generation
  • FEL amplifier
  • synchronising systems


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