强激光与粒子束, 2013, 25 (5): 1265, 网络出版: 2013-04-08
上海深紫外自由电子激光装置中激光与束流的精确同步
Precise laser-beam synchronization for Shanghai Deep-Ultraviolet Free-Electron Laser
自由电子激光 电子束 同步 相干辐射测量干涉成像系统传递函数的数值分析 free-electron laser electron beam synchronization coherent radiation measurement
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。
Abstract
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 Free-Electron Laser (SDUV-FEL) test facility, which lays a solid foundation 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.
刘波, 王兴涛, 陈建辉, 邓海啸, 冯超, 兰太和, 林国强, 王东, 张猛, 张彤. 上海深紫外自由电子激光装置中激光与束流的精确同步[J]. 强激光与粒子束, 2013, 25(5): 1265. Liu Bo, Wang Xingtao, Chen Jianhui, Deng Haixiao, Feng Chao, Lan Taihe, Lin Guoqiang, Wang Dong, Zhang Meng, Zhang Tong. Precise laser-beam synchronization for Shanghai Deep-Ultraviolet Free-Electron Laser[J]. High Power Laser and Particle Beams, 2013, 25(5): 1265.
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