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Seletskiy, S.

Paper Title Page
TUPB23 Experimental Demonstration of Wideband Tunability of an Ultrafast Laser-Seeded Free-Electron Laser 302
 
  • X. Yang, Y. Hidaka, J.B. Murphy, B. Podobedov, S. Seletskiy, Y. Shen, X.J. Wang
    BNL, Upton, Long Island, New York
  
 

We report the first experimental characterization of the wideband tunability of an ultrafast laser seeded FEL using a short seed laser pulse (140 fs in FWHM) and a variable energy electron beam. The experiments were conducted at the NSLS SDL and the FEL output spectrum and pulse energy were measured versus the electron beam energy. A significant spectral tuning range (8%) was observed. The experiment is in good agreement with predictions using the Perseo simulation code.