Title :
Linear analysis of a terahertz staggered double-grating arrays waveguide Cerenkov traveling wave amplifier
Author :
Wenqiu Xie ; Zicheng Wang ; Fangming He ; Jirun Luo ; Qinglun Liu
Author_Institution :
Inst. of Electron., Beijing, China
Abstract :
Based on a sheet electron beam propagating through the tunnel of a staggered double-grating arrays waveguide (SDGAW) slow-wave structure (SWS), a three dimensional linear theory for describing beam-wave interaction is presented, in which the higher order terms inside the groove were retained. With the optimized parameters, a 1THz SDGAW Cerenkov traveling wave amplifier (CTWA) may obtain a moderate net gain larger than 10dB/cm in 0.92THz to 1.145THz considering the serious Ohmic losses in THz frequency range.
Keywords :
Cherenkov radiation; arrayed waveguide gratings; electron beams; slow wave structures; submillimetre wave amplifiers; CTWA; Cerenkov traveling wave amplifier; Ohmic losses; SDGAW; SWS; Terahertz frequency range; beam-wave interaction; frequency 0.92 THz to 1.145 THz; linear analysis; sheet electron beam propagation; slow-wave structure; staggered double-grating arrays waveguide; three dimensional linear theory; Arrayed waveguide gratings; Computational modeling; Current density; Electron beams; Gratings; Waveguide theory; Staggered double-grating arrays waveguide; TWT; Terahertz; sheet electron beam;
Conference_Titel :
Vacuum Electronics Conference, IEEE International
Conference_Location :
Monterey, CA
DOI :
10.1109/IVEC.2014.6857584
