[1] Gregory S N, Manfred K T, Michael I A P. The gyrotron at 50: Historical overview[J]. Journal of Infrared Millimeter & Terahertz Waves, 35, 325-381(2014).
[2] Drumm O, Dammertz G, Thumm M. Design methods f mirrs in a quasioptical mode converter f a frequency steptunable gyrotron[C]Infrared Millimeter wave. 2002: 191192.
[4] Hirata Y, Mitsunaka Y, Hayashi K. The design of a tapered dimple-type mode converter/launcher for high-power gyrotrons[J]. IEEE Trans Plasma Science, 1, 142-146(2003).
[6] Agapova M, Belov Y, Chirkov A, et al. Megawatt power dualfrequency gyrotrons f modern fusion facilities[C]2019 44th International Conference on Infrared, Millimeter, Terahertz waves. 2019: 627628.
[7] Jin J, Gantenbein G, Jelonnek J, et al. Quasioptical mode converter f 1MW dualfrequency gyrotrons[C]2017 Eighteenth International Vacuum Electronics Conference. 2017.
[8] Jin J, Gantenbein G, Ruess T, et al. Design of a quasioptical mode converter f a dualfrequency coaxialcavity gyrotron[C]2019 44th International Conference on Infrared, Millimeter, Terahertz waves(IRMMWTHz). 2019.
[9] Prinz O, Gantenbein G, Thumm M. Advanced quasioptical mode converter f a multifrequency gyrotron[C]2008 IEEE International Vacuum Electronics Conference. 2008: 6466.
[10] Ikeda R, Oda Y, Kobayashi T, et al. Development of multifrequency gyrotron f ITER DEMO at QST[C]2016 41st International Conference on Infrared, Millimeter, Terahertz waves(IRMMWTHz). 2016.
[11] Liao Shaolin. Multifrequency beamshaping mirr system design f highpower gyrotrons: They, algithms methods[D]. Madison: University of Wisconsin at Madison, 2008: 155166.
[17] Du Chaohai, Pan Shi, Liu Pukun. THz broadb quasioptical mode converter antenna system[C]2016 IEEE international conference on microwave millimeter wave technology(ICMMT). 2016.
[20] Bogdashov A A, Denisov G G. Synthesis of the sequence of phase correctors forming the desired field[J]. Radio Physics & Quantum Electronics, 47, 966-973(2004).
[21] Vlasov S N. Transformation of a whispering gallery mode, propagating in a circular waveguide, into a beam of waves[J]. Radiofizika, 15, 14-17(1972).
[23] Denisov G G, Kuftin A N, Malygin V I. 110 GHz gyrotron with a built-in high-efficiency converter[J]. International Journal of Electronics, 72, 1079-1091(1992).