Title :
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
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 TE6,2 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;
Conference_Titel :
Electronic Measurement & Instruments (ICEMI), 2013 IEEE 11th International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4799-0757-1
DOI :
10.1109/ICEMI.2013.6743102
