Sideband elimination and high efficiencies in a strongly tapered free-electron laser amplifier

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Abstract

It is demonstrated by numerical simulation that strongly tapered free-electron laser amplifiers exhibit negligible sideband growth, consistent with the predictions of a recent analytical theory [R.P. Pilla and A. Bhattacharjee, Phys. Plasma 1 (1994) 390]. One-dimensional simulations are presented for a short-wavelength (∼10 μm) amplifier with a quadratically tapered wiggler. For pre-bunched electrons with a phase-spread in the range (1/3-1/2) mod 2π and thermal spread in the range (0.5-1)%, the extraction efficiency lies in the range (50-33)%.

Original languageEnglish (US)
Pages (from-to)363-366
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume375
Issue number1-3
DOIs
StatePublished - Jun 11 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

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