; Chen, Chia-Hsian
; Liu, Sheng-Guang] Natl Tsing Hua Univ, Dept Elect Engn, Hsinchu 30013, Taiwan
; [Huang, Yen-Chieh
; Lee, An-Ping
; Lau, Wai-Keung] Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan
; [Liu, Sheng-Guang] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
This paper details our study of a laser-beat-wave photoinjector that is capable of generating periodically bunched MeV electrons with a bunching factor larger than 0.1 at THz frequencies, for a total amount of 1 nC charges in a 10 ps time duration. Also described is a driver laser technology that can tune the electron bunch frequency with ease, as well as help the growth of high harmonics in the bunching spectrum of accelerated electrons. (C) 2010 Elsevier B.V. All rights reserved.