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Choi, EunMi
THz Vacuum Electronics and Electrodynamics
Research Interests
  • High power millimeter-wave/THz wave, vacuum electronics, plasma breakdown, electron beams, electromagnetics, microwave/RF engineering

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Competition-free second harmonic mode THz orbital angular momentum gyrotron with dual-mode operation by a perturbed cavity

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Title
Competition-free second harmonic mode THz orbital angular momentum gyrotron with dual-mode operation by a perturbed cavity
Author
Sawant, AshwiniChoi, EunMi
Issue Date
2017-11
Publisher
AMER INST PHYSICS
Citation
PHYSICS OF PLASMAS, v.24, no.11, pp.113109
Abstract
We propose a dual-mode orbital angular momentum (OAM) scheme at 400 GHz that uses a gyrotron. A conventional gyrotron with two modes of operation has a second harmonic resonance that competes with the fundamental mode. We used a perturbed cavity to reduce the fundamental mode competition in a second harmonic gyrotron by allowing higher-order axial mode operation. Based on a simulation using an in-house self-consistent gyrotron code, we demonstrated that the operating dual second harmonic modes TE6,4(+)/TE12,2(+) of the OAM source in the perturbed cavity at around 400 GHz can be excited without competition from the fundamental mode TE4,2(+). Published by AIP Publishing.
URI
https://scholarworks.unist.ac.kr/handle/201301/22999
URL
http://aip.scitation.org/doi/10.1063/1.5002732
DOI
10.1063/1.5002732
ISSN
1070-664X
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