A high-efficiency quasi-optical mode converter for a 94GHz TE5,3 mode gyrotron

Author

Zewei Wu ; Hao Li ; Chen Jiang ; Tianming Li ; Huan Zou

Author_Institution

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

fYear

2015

fDate

27-29 April 2015

Firstpage

1

Lastpage

2

Abstract

A quasi-optical mode converter, consisting of a helically corrugated launcher and a few curved mirrors, for a TE5,3 mode gyrotron is proposed in this paper. Applying the geometric optics approximation and the vector diffraction theory, a numerical simulation code of the mirrors system is developed. Simulation results show that the vector Gaussian mode content in the window plane more than 95% has been achieved. Experimental measurements show close agreement with theoretical predictions.

Keywords

gyrotrons; millimetre wave tubes; mirrors; TE_5,3 mode gyrotron; curved mirror; frequency 94 GHz; geometric optics approximation; helically corrugated launcher; mirrors system; quasioptical mode converter; vector Gaussian mode content; vector diffraction theory; Correlation coefficient; Extraterrestrial measurements; Gyrotrons; Mathematical model; Mirrors; Optical waveguides; Simulation; Beam-shaping mirror system; gyrotrons; mode conversion; waveguide antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2015 IEEE International

Conference_Location

Beijing

Print_ISBN

978-1-4799-7109-1

Type

conf

DOI

10.1109/IVEC.2015.7223958

Filename

7223958