Coherent emission and gain from a bunched electron beam

Author

Doria, Andrea ; Bartolini, Riccardo ; Feinstein, Joseph ; Gallerano, Gian Piero ; Pantell, Richard H.

Author_Institution

ENEA, Rome, Italy

Volume

29

Issue

5

fYear

1993

fDate

5/1/1993 12:00:00 AM

Firstpage

1428

Lastpage

1436

Abstract

The radiation from a modulated electron beam, such as that produced in a radio-frequency accelerator, passing through a magnetic undulator is analyzed. The authors show that in a waveguide free electron laser (FEL), this may lead to an emission of a significant amount of coherent radiation in the far infrared to millimeter wave range. A simple and powerful method of calculating the spectral distribution of the radiated power is presented along with an analysis of the gain and the saturated power. The experimental results of spontaneous emission measurements on an RF driven FEL, are presented and compared to theoretical predictions

Keywords

free electron lasers; laser theory; waveguide theory; wigglers; FIR; MM waves; RF accelerator; RF driven FEL; bunched electron beam; coherent emission; coherent radiation; far IR; far infrared; laser gain; magnetic undulator; millimeter wave range; modulated electron beam; radiated power; radio-frequency accelerator; saturated power; spectral distribution; spontaneous emission measurements; waveguide free electron laser; Accelerator magnets; Electron accelerators; Electron beams; Electron emission; Magnetic analysis; Magnetic modulators; Optical modulation; Radio frequency; Saturation magnetization; Undulators;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.236158

Filename

236158