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Experimental characterization of nonlinear harmonic radiation from a visible self-amplified spontaneous emission free-electron laser at saturation

  • A. Tremaine
  • , X. J. Wang
  • , M. Babzien
  • , I. Ben-Zvi
  • , M. Cornacchia
  • , H. D. Nuhn
  • , R. Malone
  • , A. Murokh
  • , C. Pellegrini
  • , S. Reiche
  • , J. Rosenzweig
  • , V. Yakimenko
  • University of California at Los Angeles
  • Brookhaven National Laboratory
  • Stanford Synchrotron Radiation Lightsource

Research output: Contribution to journalArticlepeer-review

112 Scopus citations

Abstract

Nonlinear harmonic radiation observed from a visible self-amplified, spontaneous emission (SASE) free-electron laser (FEL) at saturation was studied. Experimental characterization of the gain lengths, spectra and energies of the three lowest SASE FEL modes was performed. The gain lengths and central spectral wavelengths decreased with harmonic number in agreement with nonlinear harmonic theory. The second and third nonlinear harmonic energies were about 1% of the fundamental energy. Results indicated the feasibility of using SASE FEL radiation to produce coherent, femtosecond x rays.

Original languageEnglish
Article number204801
Pages (from-to)2048011-2048014
Number of pages4
JournalPhysical Review Letters
Volume88
Issue number20
DOIs
StatePublished - May 20 2002

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