二维摆动磁场自由电子激光自发辐射的频谱特性
ANGULAR SPECTRUM PROPERTY OF SPONTANEOUS EMISSION IN A TWO-DIMENSIONAL UNDULATOR FREE-ELECTRON LASER
-
摘要: 本文对二维摆动磁场自由电子激光的自发辐射频谱进行了理论分析,并对分析结果进行了数值计算.计算结果表明,采用l(lkx=ky)值不同的二维摆动磁场,可以增强第l次谐波的自发辐射强度,从而能够有选择地实现自由电子激光的高次谐波运转.Abstract: The angular spectrum of spontaneous emission in a wo-dimensional undulator free-electron laser is analyzed theoretically. Numerical calcularion shows that the s-th harmonic spontaneous emission power density can be greatly enhanced by using a two-dimensional undulator, for which l=s. so the harmonic number can be selected by selecting l. Therefore, the higher harmonic operation of a free-electon laser can be realized selectively.
-
B. C. Danly et al., IEEE J, of QE, QE-23(1987)10, 1739-749.[2]R. Rampont et al., Nucl. Inst. Methods in Phys. Res., A239(1985)1, 386-389.[3]R, Prazeres et al., IEEE. J. of QE, QE-27(1991)4, 1063-1068.[4]A. A. Varfolomeev, M. M. Pitatelev, Nucl, Inst. Methods in Phys. Res., A304(1991)1, 507-511.[5]刘盛纲,相对论电子学,科学出版社,北京,1987年,第448页.[6]B. M. Kincaid, J. Appl. Phys. 48(1977)7, 2684-2691.[7]W, B. Colson, Phys. Rev., A31(1985)2, 828-842.[8]L. Koch, Ernst-Eckhard Handbook on Synchrotron Radlalipn, North-Holland Pub. Co，Amsterdam, (1983), p. 156.[9]R. W. Warren, N. Novella, Nucl, lnst. Mcrl:cds in Phys. Res., A304(1991)2, 696-699. -
计量
- 文章访问数: 1965
- HTML全文浏览量: 103
- PDF下载量: 414
- 被引次数: 0
下载:
