Terahertz harmonic gyrotron based on spoof surface plasmon

Si-Qi Li, Chao-Hai Du, Juan-Feng Zhu, Zi-Wen Zhang, Fan-Hong Li, Liang Zhang, Adrian W. Cross, Pu-Kun Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

Gyrotron is based on the principle of relativistic electron cyclotron maser. With the working frequency increasing to terahertz band, the mode competition problem is caused by the interaction between harmonic cyclotron electrons and high order electromagnetic modes. In order to solve this problem, the interaction cavity of harmonic gyrotron based on spoof surface plasmon (SSP) is proposed in this paper, and its eigenmode frequency is studied, the concept of Band Gap is proposed. If the competition frequency is in the stopband, the competition mode will not be generated. Finally, the Particle-in-cell (PIC) simulation is carried out, which proves that the structure can make the terahertz gyrotron work in the single mode in state of high harmonics.

Original languageEnglish
Title of host publication2020 13th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies
Place of PublicationPiscataway, NJ
PublisherIEEE
Number of pages3
ISBN (Electronic)9781728190648
DOIs
Publication statusPublished - 30 Dec 2020
Event13th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies, UCMMT 2020 - Virtual, Tianjin, China
Duration: 29 Aug 20201 Sep 2020

Conference

Conference13th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies, UCMMT 2020
Country/TerritoryChina
CityVirtual, Tianjin
Period29/08/201/09/20

Keywords

  • gyrotron
  • higher harmonic
  • mode competition
  • spoof surface plasmon
  • Terahertz

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