%0 Journal Article
%T ANGULAR SPECTRUM PROPERTY OF SPONTANEOUS EMISSION IN A TWO-DIMENSIONAL UNDULATOR FREE-ELECTRON LASER<br>二维摆动磁场自由电子激光自发辐射的频谱特性
%A Peng Liangfu
%A Yang Zhonghai
%A Liu Shenggang
%A <br>彭良福
%A 杨中海
%A 刘盛纲
%J 电子与信息学报
%D 1993
%I 
%X 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.
%K Free-electron laser
%K Two-dimensional undulator
%K Spetrum property
%K Higher harmonic<br>自由电子激光
%K 二维摆动磁场
%K 频谱特性
%K 高次谐波
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=3E82E4B47E58FBBE&yid=D418FDC97F7C2EBA&vid=23CCDDCD68FFCC2F&iid=94C357A881DFC066&sid=8C267C8DC97FEEEF&eid=A03A15CF5604A8B0&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=9