14.4: Design of a 250 GHz photonic band gap gyrotron amplifier

Author

Nanni, Emilio A. ; Shapiro, Michael A. ; Sirigiri, Jagadishwar R. ; Temkin, Richard J.

Author_Institution

Plasma Sci. & Fusion Center, Massachusetts Inst. of Technol., Cambridge, MA, USA

fYear

2010

fDate

18-20 May 2010

Firstpage

317

Lastpage

318

Abstract

The design of a 250 GHz gyrotron traveling wave amplifier for nanosecond pulses with gain exceeding 50 dB is presented. The amplifier uses a novel photonic band gap (PBG) interaction circuit. The PBG interaction structure confines a TE₀₃-like mode with comparable interaction efficiency to a circular waveguide, while providing lower-order mode suppression and distributed loss along the entire interaction circuit. The design of the input coupler, interaction circuit and electron gun will be discussed.

Keywords

circular waveguides; gyrotrons; microwave amplifiers; photonic band gap; travelling wave amplifiers; TE₀₃-like mode; circular waveguide; electron gun; frequency 250 GHz; gyrotron traveling wave amplifier; input coupler; lower-order mode suppression; nanosecond pulses; photonic band gap interaction circuit; Coupling circuits; Electron beams; Frequency; Gyrotrons; Lattices; Nuclear and plasma sciences; Optical losses; Photonic band gap; Pulse amplifiers; Waveguide junctions; gyrotron; photonic band gap; traveling wave amplifier;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2010 IEEE International

Conference_Location

Monterey, CA

Print_ISBN

978-1-4244-7098-3

Type

conf

DOI

10.1109/IVELEC.2010.5503423

Filename

5503423