New results of the high-gain harmonic generation free-electron laser experiment

A. Doyuran, M. Babzien, T. Shaftan, S. G. Biedron, L. H. Yu, I. Ben-Zvi, L. F. DiMauro, W. Graves, E. Johnson, S. Krinsky, R. Malone, I. Pogorelsky, J. Skaritka, G. Rakowsky, X. J. Wang, M. Woodle, V. Yakimenko, J. Jagger, V. Sajaev, I. Vasserman

Research output: Contribution to journalConference articlepeer-review

7 Scopus citations


We report on the experimental investigation of high-gain harmonic generation carried out at the Accelerator Test Facility at Brookhaven National Laboratory. A seed CO2 laser at a wavelength of 10.6 μm was used to generate FEL output at a 5.3-μm wavelength. The duration of the output pulse was measured using a second-harmonic intensity autocorrelator, and the coherence length was measured using an interferometer. We also measured the energy distribution of the electron beam after it exited the second undulator, observing behavior consistent with that is expected at saturation. The intensity of the harmonic components of the output at 2.65 and 1.77 μm was determined relative to that of the 5.3-μm fundamental. Finally, using a corrector magnet upstream of the radiator, steering effects on the trajectories of the electron and light beams were studied.

Original languageEnglish (US)
Pages (from-to)260-265
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1-3
StatePublished - Nov 21 2001
Externally publishedYes
Event22nd International Free Electron Laser Conference (FEL 2000) - Durham, NC, United States
Duration: Aug 13 2000Aug 18 2000


  • Free-electron laser

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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