Nonlinear harmonic generation in free-electron lasers

被引:103
|
作者
Freund, HP [1 ]
Biedron, SG
Milton, SV
机构
[1] Sci Applicat Int Corp, Mclean, VA 22102 USA
[2] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA
关键词
electromagnetic radiation; electron beam applications; free-electron lasers; frequency conversion; frequency-domain analysis; nonlinearities; nonlinear differential equations; simulation;
D O I
10.1109/3.825873
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A three-dimensional nonlinear simulation code to treat multiple frequencies simultaneously is described and used to study nonlinear harmonic generation in free-electron lasers (FELs), Strong nonlinear harmonic gain is found where the gain length varies inversely with the harmonic number. Substantial power levels are found in the harmonics. The odd harmonics are favored with generally higher power levels since a planar wiggler geometry is employed; however, the second harmonic exhibits substantial power as well, The analysis is relevant to the emission expected from self-amplified spontaneous emission (SASE) free-electron laser schemes.
引用
收藏
页码:275 / 281
页数:7
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