ENERGY SPREAD ANALYSIS OF A WAVE-GUIDE OPTICAL KLYSTRON

Authors
Citation
Mg. Kong, ENERGY SPREAD ANALYSIS OF A WAVE-GUIDE OPTICAL KLYSTRON, Optics communications, 132(5-6), 1996, pp. 464-468
Citations number
15
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Optics
Journal title
ISSN journal
0030-4018
Volume
132
Issue
5-6
Year of publication
1996
Pages
464 - 468
Database
ISI
SICI code
0030-4018(1996)132:5-6<464:ESAOAW>2.0.ZU;2-M
Abstract
Waveguide free electron lasers (FELs) based on electrostatic accelerat or have many advantages including CW operation and high wall-plug effi ciency, and therefore are an excellent candidate for many potential ap plications in medicine, science and industry. One drawback of electros tatic accelerators is that their beam current is usually small and thi s results in a low beam-wave interaction gain. To reduce this problem, one possible approach is to employ an FEL configuration having an int rinsically higher gain such as a waveguide optical klystron configurat ion. However because of the enhanced electron bunching process, the in teraction gain of waveguide optical klystrons may become more suscepti ble to electron energy spread. To assess this quantitatively, energy s pread effects in a waveguide optical klystron are analysed and formula ted in the small signal limit. Through numerical examples, it is shown that the higher interaction gain of waveguide optical klystron device s can be realistically achieved with the nominal electron beam quality of electrostatic accelerators.