Title :
Designed of a quasi-optical mode converter for 0.42THz high order mode gyrotron
Author :
Zhang Tian-Zhong ; Yu Sheng ; Zhang Yan-Yan ; Zhao Qi-Xiang ; Li Xiang
Author_Institution :
Terahertz Sci. & Technol. Res. Center, Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A quasi-optical mode converter (QOMC) for a 0.42THz TE17,4 mode gyrotron has been designed by theoretical analysis, numerical calculation, 3D simulation in this paper. The QOMC consists of a Denisov launcher and a set of beam-forming mirrors. The operation of the Denisov launcher has been analyzed by the coupling mode theory. The mirrors are used to form the beam-forming mirrors system. The vector diffraction theory is used to calculate the fields on the mirrors. A full 3D electromagnetic analysis of the integrated QOMC has been done. Results show that a conversion efficient of more than 98.1% has been obtained. Results of 3D simulations are in good agreement with the design calculation.
Keywords :
array signal processing; gyrotrons; mirrors; 3D electromagnetic analysis; Denisov launcher; QOMC; TE17.4 mode gyrotron; beam-forming mirror system; coupling mode theory; frequency 0.42 THz; high order mode gyrotron; quasioptical mode converter; vector diffraction theory; Diffraction; Gyrotrons; Optical diffraction; Optical waveguides; Gaussian beam; THz gyrotron; coupling-mode theory; quasi-optical;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7223922
