Title :
High-harmonic terahertz radiation from prebunched electron beam in the tapered grating structure
Author :
Yaxin Zhang ; Min Hu ; Diwei Liu ; Shenggang Liu
Author_Institution :
Terahertz Sci. & Technol. Res. Center, Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
Based on the mechanism of incoherent diffraction radiation excited by an electron bunch in the waveguide with periodic structure, this paper presents the concept of coherent THz radiation from the high-harmonic component of modulated free-electron beam in a tapered two-asymmetric grating structure. The results show that in this mechanism 0.43THz 3-harmonic radiation can be generated with the efficiency 0.5%.
Keywords :
electron beams; submillimetre wave generation; terahertz wave generation; terahertz waves; waveguides; 3-harmonic radiation; coherent THz radiation; electron bunch; frequency 0.43 THz; high-harmonic component; high-harmonic terahertz radiation; incoherent diffraction radiation; modulated free-electron beam; periodic structure; prebunched electron beam; tapered grating structure; tapered two-asymmetric grating structure; waveguide; Cavity resonators; Current density; Diffraction; Dispersion; Electron beams; Laser beams; Periodic structures; high-harmonic THz radiation; prebunched electron beam;
Conference_Titel :
Millimeter Waves and THz Technology Workshop (UCMMT), 2013 6th UK, Europe, China
Conference_Location :
Rome, Italy
DOI :
10.1109/UCMMT.2013.6641518
