High-order photonic bandgap reflex klystron using carbon nanotube multi-beam cathode

Author

Kyu-Ha Jang ; Seong Hee Park ; Kitae Lee ; Gun-Sik Park ; Young Uk Jeong

Author_Institution

WCI Center for Quantum Beam-based Radiat. Res., Korea Atomic Energy Res. Inst., Daejeon, South Korea

Volume

48

Issue

12

fYear

2012

Firstpage

707

Lastpage

708

Abstract

The oscillation of a high-order mode TM₃₃₀ is observed in a photonic bandgap multi-beam reflex klystron using nine electron beams generated from a carbon nanotube cathode. One side of a conventional metal cavity was replaced with a dielectric photonic crystal lattice to form a hybrid photonic-bandgap resonator, which uses lattice bandgap effects, resulting in a more uniform field of a higher-order mode, as well as the exclusion of some conventional-cavity-type modes, thereby reducing mode competition. The high-order and multi-beam concepts would be applicable to a terahertz radiation source when the device is micromachined.

Keywords

carbon nanotubes; cathodes; klystrons; optical lattices; photonic crystals; C; carbon nanotube multibeam cathode; conventional-cavity-type modes; dielectric photonic crystal lattice; electron beams; high-order mode TM₃₃₀; high-order photonic bandgap reflex klystron; higher-order mode; hybrid photonic-bandgap resonator; lattice bandgap effects; metal cavity; multibeam concepts; photonic bandgap mult-beam reflex klystron; terahertz radiation source;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2012.0976

Filename

6215314