Simulation design of quasi-optical mode converter for 95 GHz gyrotron

shi meiyou; qu jin; xue changjiang; pan wenwu; chen shitao; yu chuan; hu jinguang

Volume 23 Issue 09

Sep. 2012

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Article Navigation > High Power Laser and Particle Beams > 2011 > 23(09): 0-

zhang peng, song yan-rong, zhang zhi-gang. Characteristics of linear Thomson scattering spectrum with few-cycle laser pulse[J]. High Power Laser and Particle Beams, 2006, 18.

Citation:

shi meiyou, qu jin, xue changjiang, et al. Simulation design of quasi-optical mode converter for 95 GHz gyrotron[J]. High Power Laser and Particle Beams, 2011, 23.

zhang peng, song yan-rong, zhang zhi-gang. Characteristics of linear Thomson scattering spectrum with few-cycle laser pulse[J]. High Power Laser and Particle Beams, 2006, 18.

Citation:

shi meiyou, qu jin, xue changjiang, et al. Simulation design of quasi-optical mode converter for 95 GHz gyrotron[J]. High Power Laser and Particle Beams, 2011, 23.

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Simulation design of quasi-optical mode converter for 95 GHz gyrotron

1.
Institute of Applied Electronics,CAEP,P.O.Box 919-1016,Mianyang 621900,China;
2.
Graduate School of China Academy of Engineering Physics,Mianyang 621900,China

Publish Date: 2011-09-15

Abstract

Abstract

The high-order mode output of high power millimeter wave gyrotron should be converted due to its disadvantages in space transport, which can be hardly solved by waveguide mode converter. Thus the built-in quasi-optical mode converter is studied. The converter consists of Vlasov launcher, quasi-parabolic mirror and phase correcting mirros. The simulation program is developed according to scalar diffraction theory and KSA algorithm, and phase correcting mirrors are designed. The calculation analysis of field distribution at the reference plane shows that, the converter’s scalar conversion efficiency is larger than 98%, and the vector conversion efficiency is larger than 93%. The results indicate that the method can guide the design of quasi-optical mode converter efficiently.
- quasi-optical mode converters,
- phase correcting mirror,
- scalar diffraction theory,
- te62 mode

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