Theoretical and Experimental Research on a Millimeter-Wavelength Free-Electron Laser
Abstract
The Columbia Free Electron Laser is summarized with a selection of key reprints. Topics include: gain and wavelength studies, Thomson-scattering diagnostics for electron beam momentum-spread, efficiency-enhancement experiments, theory and experiments on optical guiding and sidebands. Papers describing the first results from our new FEL facility and other being a theory of beam temperature effects upon the gain of an FEL (one of the first of several such studies that have been made by several groups). A pair of papers discussing results from a type of FEL which has since become known as a 'CARM'. The results of a CO2 laser - Thomson backscattering experiment determined the momentum spread of the electron beam in our FEL. The operation of the FEL oscillator with a tapered undulator is reported in which not only efficiency enhancement but also sideband power reduction was obtained. The theory of optical guiding is covered in our Raman REL presenting experimental evidence that the optical power profile is modified by optical guiding as it occurs in our overmoded waveguide system.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1989
- Accession Number
- ADA213321
Entities
People
- T. C. Marshall
Organizations
- Columbia University