Title :
A novel small-period wiggler and simulations of its free-electron laser
Author :
Feng, Bibo ; Wang, Zhijiang ; Zhijiang Wang
Author_Institution :
Shanghai Inst. of Opt. & Fine Mech., Acad. Sinica, China
fDate :
8/1/1993 12:00:00 AM
Abstract :
A small-period wiggler constructed of edgy-wound bifilar-helical conducting sheets with ferromagnetic cores, which is intended for free-electron lasers, is presented. The performance characteristics of the wiggler fields with a 100 mm period are measured. A field as high as 1500 G has been obtained. Free-electron lasers with this small-period wiggler have been investigated numerically with a three-dimensional nonlinear theory. Simulation results estimated that a radiation power of 20.2 MW and a frequency of 170 GHz with an efficiency of 5.1% can be obtained. It is feasible to make Raman free-electron lasers with this type of wiggler operating in the millimeter and submillimeter wavelength range with a relatively low electron energy (<500 keV) beam
Keywords :
Raman lasers; free electron lasers; laser theory; masers; submillimetre wave devices; wigglers; 1500 G; 170 GHz; 20.2 MW; 3D; 5.1 percent; 500 keV; Raman free-electron lasers; bifilar-helical conducting sheets; edgy-wound; electron beam energy; ferromagnetic cores; free-electron laser; performance characteristics; radiation power; relatively low electron energy; simulations; small-period wiggler; submillimeter wavelength range; three-dimensional nonlinear theory; wiggler fields; Copper; Electromagnetic wave polarization; Electromagnets; Electron beams; Free electron lasers; Frequency estimation; Lamination; Laser theory; Undulators; Wounds;
Journal_Title :
Quantum Electronics, IEEE Journal of
