Design of quasi-optical mode converter for 94GHz gyrotron

Author

Liu Jianwei ; Zhao Qing ; Li Hongfu

Author_Institution

Sch. of the Phys. Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

1

fYear

2013

fDate

16-19 Aug. 2013

Firstpage

151

Lastpage

153

Abstract

In this paper a quasi-optical mode converter including a simple, easily manufacturable Vlasov launcher, one parabolic mirror and one elliptical mirror for 94GHz TE_6,2 mode gyrotron is designed. Vlasov launcher is analyzed in terms of geometric optics theory, the radiation field is calculated by Stratton-Chu formula, a simulation code is written to optimize the reflected mirrors. The simulation results show that the power transmission efficiency of the operating cavity mode to a fundamental Gaussian distribution is 84.15%, the scalar correlation coefficient is greater than 90% at the window plane.

Keywords

Gaussian distribution; geometrical optics; gyrotrons; millimetre wave tubes; Gaussian distribution; Stratton-Chu formula; Vlasov launcher; elliptical mirror; frequency 94 GHz; geometric optics theory; gyrotron; operating cavity mode; parabolic mirror; power transmission efficiency; quasioptical mode converter; scalar correlation coefficient; Apertures; Gyrotrons; Manganese; Mirrors; Optical waveguides; Vectors; Gaussian wave beam; gyrotron; reflected mirrors; the Vlasov launcher;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Measurement & Instruments (ICEMI), 2013 IEEE 11th International Conference on

Conference_Location

Harbin

Print_ISBN

978-1-4799-0757-1

Type

conf

DOI

10.1109/ICEMI.2013.6743102

Filename

6743102