Denisov-type quasi-optical mode converter forhigher-order asymmetric volume mode gyrotron  

出　　处：《强激光与粒子束》2016年第7期89-96,共8页High Power Laser and Particle Beams

摘　　要：The principle and design method of Denisov-type quasi-optical mode converter is investigated indetail. The operation process of the Denisov-type launcher is analyzed by applying the geometrical optics, andthe Gaussian-like field distribution achieved on the waveguide wall is also derived. The method for designing arippled-wall launcher is proposed on the basis of coupled mode theory. A simulation code for Denisov-type qua-si-optical mode converter GQOMC-D is developed based on coupled mode theory, vector diffraction integrationand physical optics, which is compared to the design parameters and experimental results reported in literaturefor its validity. According to this code, a Denisov-type quasi-optical mode converter used in 110 GHz TE22.6mode gyrotron oscillators is designed. Simulation results indicate that a Gaussian-like beam is obtained at theoutput window with a scalar content of 98.4 % and a conversion efficiency of 94.7 %.

关 键 词：GYROTRON quasi-optical MODE converter Denisov-type LAUNCHER coupled MODE theory 

分 类 号：TN128[电子电信—物理电子学] TN814