A single stage EEHG at SXFEL for narrow-bandwidth soft X-ray generation

作     者：Chao Feng Dazhang Huang Haixiao Deng Jianhui Chen Dao Xiang Bo Liu DongWang Zhentang Zhao 

作者机构：Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 China Department of Physics and Astronomy Key Laboratory for Laser Plasma Shanghai Jiao Tong University Shanghai 200240China 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2016年第61卷第15期

页      面：1202-1212页

核心收录：

学科分类：080901[工学-物理电子学] 070207[理学-光学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：This work was partially supported by the National Development and Reform Commission ([201312347)  the National Natural Science Foundation of China (11475250  11175240  11275253 and 11322550) and the National Basic Research Program of China (2015CB859700) 

主　　题：X-ray free-electron lasers EEHG Coherent soft X-ray Harmonic lasing Waterwindow 

摘      要：The echo-enabled harmonic generation （EEHG） scheme holds promising prospects for efficiently generat- ing intense coherent radiation at very high harmonics of the initial seed laser. In this paper, we study the feasibility of operating the Shanghai X-ray free-electron laser test facility with a single stage EEHG setup. With a combina- tion of existing numerical codes, start-to-end simulations considering various three-dimensional effects have been carried out to show the possible performance of the EEHG FEL. Simulation results demonstrate that a single stage EEHG can generate high power soft X-ray radiation pulses with narrow bandwidth directly from UV seed lasers. With the help of the harmonic lasing technique or upgraded linac, we also show the possibility of generating coherent soft X-ray radiation in the ＂water window＂ with a single stage EEHG.