Designs for an infrared free-electron laser based on gyrotron-powered electromagnetic wigglers

Author

Fliflet, Arne W. ; Manheimer, Wallace M. ; Fischer, Richard P.

Author_Institution

Div. of Plasma Phys., Naval Res. Lab., Washington, DC, USA

Volume

22

Issue

5

fYear

1994

fDate

10/1/1994 12:00:00 AM

Firstpage

638

Lastpage

648

Abstract

The possibility of developing gyrotron-powered electromagnetic wiggler free-electron laser (FEL) oscillators is of considerable interest for reducing the electron energy required for operation in the infrared spectrum. This paper considers the design of a 10.6 μm electromagnetic wiggler FEL experiment based on the University of California at Santa Barbara (UCSB) 6 MeV electrostatic accelerator. Both waveguide and quasioptical wiggler resonator configurations are considered. A prescription for optimizing the gain of a waveguide electromagnetic wiggler FEL is derived and the nonlinear regime is treated by relating the electromagnetic wiggler FEL equations-of-motion to the “universal” normalized FEL equations. Point designs are given showing accelerator, gyrotron, and output parameters for 10.6 μm Proof-of-Principle FEE experiments based on both waveguide gyrotron and quasioptical gyrotron wigglers. Designs are given for both a 5- and a 2-A FEL electron beam

Keywords

electromagnets; free electron lasers; gyrotrons; wigglers; 10.6 mum; 2 A; 5 A; FEL oscillators; Santa Barbara; electron energy; electrostatic accelerator; equations-of-motion; gain optimisation; gyrotron-powered electromagnetic wigglers; infrared free-electron laser; niversity of California; nonlinear regime; point designs; quasioptical wiggler resonator; waveguide; Electromagnetic scattering; Electromagnetic waveguides; Free electron lasers; Gyrotrons; Infrared spectra; Nonlinear equations; Optical design; Oscillators; Undulators; Waveguide lasers;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.338277

Filename

338277