High Power Laser Science and Engineering, 2018, 6 (4): 04000e64, Published Online: Dec. 27, 2018  

Dispersion effects on performance of free-electron laser based on laser wakefield accelerator Download: 572次

Author Affiliations
1 State Key Laboratory of High Field Laser Physics , Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences , Shanghai 201800 , China
2 University of Chinese Academy of Sciences , Beijing 100049 , China
3 Collaborative Innovation Center of IFSA , Shanghai Jiao Tong University , Shanghai 200240 , China
4 School of Physical Science and Technology , ShanghaiTech University, Shanghai 200031 , China
Abstract
In this study, we investigate a new simple scheme using a planar undulator (PU) together with a properly dispersed electron beam ( beam) with a large energy spread ( ) to enhance the free-electron laser (FEL) gain. For a dispersed beam in a PU, the resonant condition is satisfied for the center electrons, while the frequency detuning increases for the off-center electrons, inhibiting the growth of the radiation. The PU can act as a filter for selecting the electrons near the beam center to achieve the radiation. Although only the center electrons contribute, the radiation can be enhanced significantly owing to the high-peak current of the beam. Theoretical analysis and simulation results indicate that this method can be used for the improvement of the radiation performance, which has great significance for short-wavelength FEL applications.

Ke Feng, Changhai Yu, Jiansheng Liu, Wentao Wang, Zhijun Zhang, Rong Qi, Ming Fang, Jiaqi Liu, Zhiyong Qin, Ying Wu, Yu Chen, Lintong Ke, Cheng Wang, Ruxin Li. Dispersion effects on performance of free-electron laser based on laser wakefield accelerator[J]. High Power Laser Science and Engineering, 2018, 6(4): 04000e64.

引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!