Orbital Angular Momentum (OAM) of Rotating Modes Driven by Electrons in Electron Cyclotron Masers

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 hig...

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Autores principales: Sawant, Ashwini, Choe, Mun Seok, Thumm, Manfred, Choi, EunMi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5469808/
https://www.ncbi.nlm.nih.gov/pubmed/28611352
http://dx.doi.org/10.1038/s41598-017-03533-y
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author Sawant, Ashwini
Choe, Mun Seok
Thumm, Manfred
Choi, EunMi
author_facet Sawant, Ashwini
Choe, Mun Seok
Thumm, Manfred
Choi, EunMi
author_sort Sawant, Ashwini
collection PubMed
description 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.
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spelling pubmed-54698082017-06-19 Orbital Angular Momentum (OAM) of Rotating Modes Driven by Electrons in Electron Cyclotron Masers Sawant, Ashwini Choe, Mun Seok Thumm, Manfred Choi, EunMi Sci Rep Article 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. Nature Publishing Group UK 2017-06-13 /pmc/articles/PMC5469808/ /pubmed/28611352 http://dx.doi.org/10.1038/s41598-017-03533-y Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Sawant, Ashwini
Choe, Mun Seok
Thumm, Manfred
Choi, EunMi
Orbital Angular Momentum (OAM) of Rotating Modes Driven by Electrons in Electron Cyclotron Masers
title Orbital Angular Momentum (OAM) of Rotating Modes Driven by Electrons in Electron Cyclotron Masers
title_full Orbital Angular Momentum (OAM) of Rotating Modes Driven by Electrons in Electron Cyclotron Masers
title_fullStr Orbital Angular Momentum (OAM) of Rotating Modes Driven by Electrons in Electron Cyclotron Masers
title_full_unstemmed Orbital Angular Momentum (OAM) of Rotating Modes Driven by Electrons in Electron Cyclotron Masers
title_short Orbital Angular Momentum (OAM) of Rotating Modes Driven by Electrons in Electron Cyclotron Masers
title_sort orbital angular momentum (oam) of rotating modes driven by electrons in electron cyclotron masers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5469808/
https://www.ncbi.nlm.nih.gov/pubmed/28611352
http://dx.doi.org/10.1038/s41598-017-03533-y
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