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최은미

Choi, EunMi
THz Vacuum Electronics and Applied Electromagnetics Lab.
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Orbital Angular Momentum (OAM) of Rotating Modes Driven by Electrons in Electron Cyclotron Masers

Author(s)
Sawant, AshwiniChoe, Mun SeokThumm, ManfredChoi, EunMi
Issued Date
2017-06
DOI
10.1038/s41598-017-03533-y
URI
https://scholarworks.unist.ac.kr/handle/201301/22235
Fulltext
https://www.nature.com/articles/s41598-017-03533-y
Citation
SCIENTIFIC REPORTS, v.7, pp.3372
Abstract
The well-defined orbital angular momentum (OAM) of rotating cavity modes operating near the cutoff frequency excited by gyrating electrons in a high-power electron cyclotron maser (ECM)-a gyrotron-has been derived by photonic and electromagnetic wave approaches. A mode generator was built with a high-precision 3D printing technique to mimic the rotating gyrotron modes for precise low-power measurements and shows clear natural production of higher-order OAM modes. Cold-test measurements of higher-order OAM mode generation promise the realization towards wireless long-range communications using high-power ECMs.
Publisher
NATURE PUBLISHING GROUP
ISSN
2045-2322
Keyword
LOW-POWER EXCITATIONGYROTRON-TYPE MODESGENERATIONMILLIMETERBEAMS

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