Higher Harmonics in Free Electron Laser with a Two-Wavenumber Plane Wiggler Magnetic Field
LU Bo, YANG Zhonghai, LIU Shenggang, YU Junsheng*
Institute of High Electronics, University of Electronic Science and Technology of China, Chengdu 610054
*Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041
Higher Harmonics in Free Electron Laser with a Two-Wavenumber Plane Wiggler Magnetic Field
LU Bo;YANG Zhonghai;LIU Shenggang;YU Junsheng*
Institute of High Electronics, University of Electronic Science and Technology of China, Chengdu 610054
*Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041
Abstract： The higher harmonics of the free electron laser (FEL) with a two-wavenumber plane wiggler magnetic field, which may induce a lot of higher harmonics, are investigated. Using a two-wavenumber wiggler comprised of two separate periodicities, kω and kω + Δk, numerical simulations show that the higher harmonic may be amplified and the first harmonic may be suppressed in this kind of FEL with an optimized parameter Δk. The coupling coefficient and gain coefficient in low-gain regime of the harmonic are also obtained.
LU Bo;YANG Zhonghai;LIU Shenggang;YU Junsheng*. Higher Harmonics in Free Electron Laser with a Two-Wavenumber Plane Wiggler Magnetic Field[J]. 中国物理快报, 1993, 10(4): 223-226.
LU Bo, YANG Zhonghai, LIU Shenggang, YU Junsheng*. Higher Harmonics in Free Electron Laser with a Two-Wavenumber Plane Wiggler Magnetic Field. Chin. Phys. Lett., 1993, 10(4): 223-226.
1993, Vol. 10 
