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Broadband graphene-based electro-optic chiral polarization conversion for terahertz pulse shaping
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Chen, Zefeng, Chen, Xuequan, Tao, Li, Chen, Kun, Zhang, Rui, Long, Mingzhu, Pickwell-MacPherson, Emma and Xu, Jianbin (2022) Broadband graphene-based electro-optic chiral polarization conversion for terahertz pulse shaping. ACS Photonics, 9 (11). pp. 3633-3641. doi:10.1021/acsphotonics.2c01128 ISSN 2330-4022.
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WRAP-Broadband-graphene-based-electro-optic-chiral-polarization-conversion-for-terahertz-pulse-shaping-MacPherson-2022.pdf - Accepted Version - Requires a PDF viewer. Download (1118Kb) | Preview |
Official URL: https://doi.org/10.1021/acsphotonics.2c01128
Abstract
Terahertz (THz) radiation is ideally suited for noninvasive testing and short-distance data transmission. Actively controlling the polarization of THz waves is highly desirable in measurement systems. Although significant developments of THz active devices has been achieved through introducing the electromagnetic resonance structure (e.g., metamaterials), the bandwidth is limited. Here, we propose a graphene-based electrically reconfigurable polarization conversion across a broadband THz region (0.3 to 0.9 THz) for controlling the chiral polarization of terahertz pulse. By electrically controlling the graphene conductivity, we can switch the device reflection in-between total internal reflection and metal mirror reflection to realize a frequency-independent phase change, which enables a tunable waveplate with a high dynamic range for manipulating the polarization of THz waves. Because of the frequency-independent modulation property, we achieved tunable chiral polarization THz waveforms in the time domain for the first time, from right-handed to left-handed polarization. This work opens up a new mechanism for designing novel THz modulators for THz circular dichroism.
Item Type: | Journal Article | |||||||||||||||||||||||||||||||||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||||||||||||||||||||
SWORD Depositor: | Library Publications Router | |||||||||||||||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Submillimeter waves, Broadband communication systems, Chirality, Graphene | |||||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | ACS Photonics | |||||||||||||||||||||||||||||||||||||||
Publisher: | American Chemical Society (ACS) | |||||||||||||||||||||||||||||||||||||||
ISSN: | 2330-4022 | |||||||||||||||||||||||||||||||||||||||
Official Date: | 16 November 2022 | |||||||||||||||||||||||||||||||||||||||
Dates: |
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Volume: | 9 | |||||||||||||||||||||||||||||||||||||||
Number: | 11 | |||||||||||||||||||||||||||||||||||||||
Page Range: | pp. 3633-3641 | |||||||||||||||||||||||||||||||||||||||
DOI: | 10.1021/acsphotonics.2c01128 | |||||||||||||||||||||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||||||||||||||||||||
Reuse Statement (publisher, data, author rights): | This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Photonics, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsphotonics.2c01128 | |||||||||||||||||||||||||||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||||||||||||||||||||||||||
Copyright Holders: | American Chemical Society | |||||||||||||||||||||||||||||||||||||||
Date of first compliant deposit: | 29 November 2022 | |||||||||||||||||||||||||||||||||||||||
Date of first compliant Open Access: | 18 October 2023 | |||||||||||||||||||||||||||||||||||||||
RIOXX Funder/Project Grant: |
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