Title :
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
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; TE5,3 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;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7223958
