Matching-based two-color X-ray free-electron laser generation utilizing laser-plasma accelerated electron beam  

作　　者：Tao Liu Kaiqing Zhang Zheng Qi Si Chen Chao Feng Haixiao Deng Bo Liu Dong Wang 

机构地区：[1]Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210,China

出　　处：《High Power Laser Science and Engineering》2022年第1期1-9,共9页高功率激光科学与工程（英文版）

基　　金：supported by the National Key Research and Development Program of China(2018YFE0103100);the National Natural Science Foundation of China(11905277,12125508,11935020,and 11975300);Shanghai Science and Technology Committee Rising-Star Program(20QA1410100);Program of Shanghai Aca-demic/Technology Research Leader(21XD1404100);Shanghai Pilot Program for Basic Research-Chinese Academy of Sciences,Shanghai Branch(JCYJ-SHFY-2021-010).

摘　　要：Laser-plasma accelerators(LPAs)have great potential to realize a compact X-ray free-electron laser(FEL),which is limited by the beam properties currently.Two-color high-intensity X-ray FEL provides a powerful tool for probing ultrafast dynamic systems.In this paper,we present a simple and feasible method to generate a two-color X-ray FEL pulse based on an LPA beam.In this scheme,time-dependent mismatch along the bunch is generated and manipulated by the designed lattice system,enabling FEL lasing at different wavelength within two undulator sections.The time separation between the two pulses can be precisely adjusted by varying the time-delay chicane.Numerical simulations show that two-color soft X-ray FELs with gigawatt-level peak power and femtosecond duration can be generated,which confirm the validity and feasibility of the scheme.

关 键 词：free-electron lasers laser-plasma accelerator two-color X-RAY 

分 类 号：TN24[电子电信—物理电子学] O434.1[机械工程—光学工程]