FEL emissions at 160 NM in seeded configuration on the SCSS test accelerator

  • G. Lambert
  • , M. Bougeard
  • , B. Carre
  • , D. Garzella
  • , O. Gobert
  • , M. Labat
  • , H. Merdji
  • , P. Salières
  • , O. Chubar
  • , M. E. Couprie
  • , T. Hara
  • , T. Ishikawa
  • , H. Kitamura
  • , T. Shintake
  • , K. Tahara
  • , Y. Tanaka
  • , M. Yabashi
  • , T. Tanikawa

Research output: Contribution to conferencePaperpeer-review

Abstract

Today, single-pass Free-Electron Lasers (FEL) produced a highly bright radiation, the Self Amplified Spontaneous Emission (SASE), which spectral and temporal profiles are composed of a series of spikes. We have demonstrated the strong and coherent amplification of the 5th harmonic of a Ti: Sa laser (800 nm, 10 Hz, 100 fs) generated in a gas cell, i.e. 160 nm, by the SCSS (SPring-8 Compact SASE Source, Japan) Test Accelerator FEL. This is obtained by overlapping transversally, spectrally and temporally the external harmonic source in the in-vacuum undulator with the electron beam (150 MeV, 10 Hz, 1 ps). With only one undulator section, the 160 nm seeded emission achieves three orders of magnitude higher intensity than the unseeded one, and presents a quasi perfect Gaussian shape in the spectral distribution. With two undulator sections, the seeded FEL spectrum reveals first effects of saturation.

Original languageEnglish
Pages429-431
Number of pages3
Publication statusPublished - 1 Dec 2008
Event30th International Free Electron Laser Conference, FEL 2008 - Gyeongju, Korea, Republic of
Duration: 24 Aug 200829 Aug 2008

Conference

Conference30th International Free Electron Laser Conference, FEL 2008
Country/TerritoryKorea, Republic of
CityGyeongju
Period24/08/0829/08/08

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