Investigation of Raman free-electron lasers with a bifilar helical small-period wiggler

Author

Feng, Bibo ; Lu, Zaitong ; Zhang, Lifen ; Wang, Mingchang

Author_Institution

Inst. of Opt. & Fine Mech., Acad. Sinica, Shanghai, China

Volume

30

Issue

11

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

2682

Lastpage

2687

Abstract

A Raman free-electron laser with a novel bifilar helical small-period wiggler is presented. The magnetic characteristics of such a wiggler are measured, and the maximum transverse field of the wiggler as high as 1500 G has been obtained with the wiggler period 10 mm and gap 15 mm. The experimental results indicated that the free-electron laser operates in the range of 3 mm when using a limited pulse duration of electron beam (300 keV/400 A, 50 ns), and the maximum laser power of 600 kW is observed, corresponding to electron efficiency of 0.5%

Keywords

Raman lasers; free electron lasers; wigglers; 0.5 percent; 1500 gauss; 600 kW; Raman free-electron lasers; bifilar helical small-period wiggler; electron beam; electron efficiency; limited pulse duration; magnetic characteristics; maximum laser power; maximum transverse field; Copper; Electromagnets; Electron beams; Free electron lasers; Optical pulses; Optical resonators; Power lasers; Prototypes; Superconducting magnets; Undulators;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.333726

Filename

333726