上海深紫外自由电子激光装置中激光与束流的精确同步(英文)  

Precise laser-beam synchronization for Shanghai Deep-Ultraviolet Free-Electron Laser

作　　者：刘波[1] 王兴涛[1] 陈建辉[1] 邓海啸[1] 冯超[1] 兰太和[1] 林国强[1] 王东[1] 张猛[1] 张彤[1] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800

出　　处：《强激光与粒子束》2013年第5期1265-1269,共5页High Power Laser and Particle Beams

基　　金：Supported by National Natural Science Foundation of China(Grant No.11175241);National 973 Program of China(Grant No.2011CB808300)

摘　　要：介绍了一种基于相干辐射测量的激光-电子束同步方法,描述了实现空间及时间同步的基本原理、步骤和细节,并利用这种方法在上海深紫外自由电子激光装置(SDUV-FEL)上实现了电子束与激光之间亚ps量级的精确同步,为基于外种子激光的高增益高次谐波产生(HGHG)、回声型谐波产生(EEHG)和级联HGHG自由电子激光实验奠定了坚实的基础。还利用这种手段对不同条件下的电子束纵向特性进行了测量和分析。A general laser-beam synchronization method based on coherent radiation measurement is introduced. Fundamental principles and detailed steps to achieve spatial and temporal synchronization are described. Sub-picosecond level synchronization between the seed laser and the electron beam has been achieved with this method at the Shanghai Deep-Ultraviolet Freelectron Laser （SDUV-FEL） test facility, which lays a solid Soundation for seeding experiments such as high-gain harmonic-generation （HGHG）, echo-enabled harmonic- generation （EEHG） and cascaded HGHG. Moreover, longitudinal profiles of the electron beam under different conditions are measured and analyzed.

关 键 词：自由电子激光 电子束 同步 相干辐射测量 

分 类 号：TN248.6[电子电信—物理电子学]