Creating a near-perfect circularly polarized terahertz beam through the nonreciprocity of a magnetoplasma

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dc.citation.firstpage38540en_US
dc.citation.issueNumber23en_US
dc.citation.journalTitleOptics Expressen_US
dc.citation.lastpage38549en_US
dc.citation.volumeNumber31en_US
dc.contributor.authorJu, Xueweien_US
dc.contributor.authorHu, Zhiqiangen_US
dc.contributor.authorZhu, Guofengen_US
dc.contributor.authorHuang, Fengen_US
dc.contributor.authorChen, Yanqingen_US
dc.contributor.authorGuo, Cuixiaen_US
dc.contributor.authorBelyanin, Alexeyen_US
dc.contributor.authorKono, Junichiroen_US
dc.contributor.authorWang, Xiangfengen_US
dc.date.accessioned2024-05-03T15:51:13Zen_US
dc.date.available2024-05-03T15:51:13Zen_US
dc.date.issued2023en_US
dc.description.abstractCompared to other parts of the electromagnetic spectrum, the terahertz frequency range lacks efficient polarization manipulation techniques, which is impeding the proliferation of terahertz technology. In this work, we demonstrate a tunable and broadband linear-to-circular polarization converter based on an InSb plate containing a free-carrier magnetoplasma. In a wide spectral region (∼ 0.45 THz), the magnetoplasma selectively absorbs one circularly polarized mode due to electron cyclotron resonance and also reflects it at the edges of the absorption band. Both effects are nonreciprocal and contribute to form a near-zero transmission band with a high isolation of –36 dB, resulting in the output of a near-perfect circularly polarized terahertz wave for an incident linearly polarized beam. The near-zero transmission band is tunable with magnetic field to cover a wide frequency range from 0.3 to 4.8 THz.en_US
dc.identifier.citationJu, X., Hu, Z., Zhu, G., Huang, F., Chen, Y., Guo, C., Belyanin, A., Kono, J., & Wang, X. (2023). Creating a near-perfect circularly polarized terahertz beam through the nonreciprocity of a magnetoplasma. Optics Express, 31(23), 38540–38549. https://doi.org/10.1364/OE.500889en_US
dc.identifier.digitaloe-31-23-38540en_US
dc.identifier.doihttps://doi.org/10.1364/OE.500889en_US
dc.identifier.urihttps://hdl.handle.net/1911/115572en_US
dc.language.isoengen_US
dc.publisherOptica Publishing Groupen_US
dc.rightsPublished under the terms of the Optica Open Access Publishing Agreementen_US
dc.rights.urihttps://opg.optica.org/library/license_v2.cfm#VOR-OAen_US
dc.titleCreating a near-perfect circularly polarized terahertz beam through the nonreciprocity of a magnetoplasmaen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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