Hollow metal tubes for efficient electron manipulation using terahertz surface waves

被引:5
|
作者
Yu, Xieqiu [1 ,2 ,3 ]
Zeng, Yushan [1 ,2 ]
Bai, Yafeng [1 ,2 ]
Song, Liwei [1 ,2 ,3 ]
Tian, Ye [1 ,2 ,3 ]
机构
[1] Chinese Acad Sci, State Key Lab High Field Laser Phys, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, CAS Ctr Excellence Ultraintense Laser Sci, Shanghai 201800, Peoples R China
[3] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
DRIVEN;
D O I
10.1364/OE.509993
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Compact electron sources have been instrumental in multidiscipline sciences including fundamental physics, oncology treatments, and advanced industries. Of particular interest is the terahertz-driven electron manipulation that holds great promise for an efficient high gradient of multi-GeV/m inside a regular dielectric-lined waveguide (DLW). The recent study relying on terahertz surface waves has demonstrated both high terahertz energy and improved coupling efficiency with the DLW. However, the large energy spread pertaining to the laser-induced electron pulse impedes the practical use of the system. Here, we propose a scheme for extending the idea of surface-wave-driven electron manipulation to mature electron sources such as commercial direct-current and radio-frequency electron guns. By using a simple hollow cylinder tube for electron transmission, we show that the electron energy modulation can reach up to 860 keV, or compress the electron pulse width to 15 fs using a 2.9 mJ single-cycle terahertz pulse. The trafficability of the hollow tube also allows for a cascade of the system, which is expected to pave the way for compact and highly efficient THz-driven electron sources
引用
收藏
页码:3076 / 3084
页数:9
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