High-harmonic terahertz radiation from prebunched electron beam in the tapered grating structure

Author

Xin, Zhang Ya ; Liang, D. ; Cong, Z.Y. ; Hao, L.W. ; Ping, Z. ; Liu, S.G.

Author_Institution

Terahertz Sci. & Technol. Res. Center, Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2012

fDate

23-28 Sept. 2012

Firstpage

1

Lastpage

2

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 in this mechanism 0.43THz 3-harmonic radiation can be generated with the efficiency 0.5%.

Keywords

diffraction gratings; electron beams; optical waveguides; particle beam bunching; periodic structures; terahertz wave generation; 3-harmonic radiation generation; 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 two-asymmetric grating structure; waveguide; Cavity resonators; Current density; Diffraction; Dispersion; Electron beams; Laser beams; Periodic structures;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on

Conference_Location

Wollongong, NSW

ISSN

2162-2027

Print_ISBN

978-1-4673-1598-2

Electronic_ISBN

2162-2027

Type

conf

DOI

10.1109/IRMMW-THz.2012.6380487

Filename

6380487