First SASE and seeded FEL lasing of the NSLS DUV FEL at 266 and 400 nm

L. DiMauro, A. Doyuran, W. Graves, R. Heese, E. D. Johnson, S. Krinsky, H. Loos, J. B. Murphy, G. Rakowsky, J. Rose, T. Shaftan, B. Sheehy, J. Skaritka, X. J. Wang, L. H. Yu

Research output: Contribution to journalConference articlepeer-review

21 Scopus citations


The Deep Ultra-Violet Free Electron Laser (DUVFEL) at the National Synchrotron Light Source consists of a 5MeV photoinjector, a 200MeV S-band linear accelerator, a four-magnet chicane compressor and a 10m wiggler with a 3.9cm period. The commissioning of the SDL accelerator was completed recently and it is routinely producing a high-quality electron beam with a peak current of ̃400A and a normalised emittance of 3-4mmmrad. The first SASE lasing of the DUV FEL has been demonstrated at both 266 and 400nm. The gain length of the SASE experiments was measured to be 66cm in both cases and up to 20nJ per pulse was obtained. A laser seeded FEL at 266nm is in the very early stages of commissioning and amplification of the laser seed has been observed. The goal of the seeded laser FEL is to saturate the FEL and thereby generate sufficient third harmonic at 89nm for experimental applications. Here we report the observation and measurements of SASE at 400 and 266nm and the first results of seeded FEL.

Original languageEnglish (US)
Pages (from-to)15-18
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1-2
StatePublished - Jul 11 2003
Externally publishedYes
EventProceedings of the 24th International Free Electron Laser Conference - Argonne, IL, United States
Duration: Sep 9 2002Sep 13 2002


  • Free Electron Laser
  • SASE
  • UV radiation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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