Long-Pulse, Low-Voltage Infrared Free-Electron Laser

Wallace M. Manheimer, Arne W. Fliflet

Research output: Contribution to journalArticlepeer-review


Free-electron lasers (FEL‘s) have been developed as powerful IR sources at several sites around the world. This paper considers the design of a relatively compact, low-cost, tunable IR FEL based on a 3-MeV electrostatic accelerator and a submillimeter-wavelength electromagnetic wiggler. The system should be sufficiently portable for use in the field, and applications such as remote sensing and industrial processing are envisioned. The wiggler is powered by a second-harmonic quasioptical gyrotron. A prescription for optimizing the gain of an electromagnetic wiggler FEL is derived and the nonlinear regime is treated by relating the electromagnetic wiggler FEL to the “universal” normalized FEL equations. A point design is given showing accelerator, gyrotron, and output parameters for a system capable of operating over the entire 3-13-µm wavelength atmospheric windows. A wide range of output characteristics is available.

Original languageEnglish (US)
Pages (from-to)185-193
Number of pages9
JournalIEEE Journal of Quantum Electronics
Issue number1
StatePublished - Jan 1994
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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