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Paper Abstract and Keywords
Presentation 2023-01-24 12:00
Design of terahertz vortex component made with polarization-independent metasurface with high refractive index and low reflectance
Shunji Yamamori, Kohei Urashima, Takehito Suzuki (TUAT) PN2022-41 EMT2022-79 MWPTHz2022-67
Abstract (in Japanese) (See Japanese page) 
(in English) Multiplexing terahertz vortices with different topological charges would be a welcome contribution to enable high-capacity, ultra-high-speed wireless communications, including 6G communications. However, terahertz vortex components suitable for integration with terahertz continuous-wave (CW) sources are necessary to offer accessible devices in the terahertz waveband. In this report, we present measurements of two-dimensional intensity distribution maps for collimated terahertz waves radiated from a single RTD oscillating at 0.312 THz by a metalens antenna. We also present the design of a terahertz vortex component that converts plane waves to terahertz vortices in the 0.3-THz band consisting of 4-layer laminated polarization-independent metasurfaces with high refractive indices and low reflectance and verify terahertz vortices by simulations. We will measure the fabricated terahertz vortex component by the prepared experimental system. The designed terahertz vortex component with polarization-independent could be mounted on terahertz wave CW sources without angle adjustment.
Keyword (in Japanese) (See Japanese page) 
(in English) Terahertz wave / Vortex / Metasurface / Metalens antenna / / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 352, MWPTHz2022-67, pp. 53-58, Jan. 2023.
Paper # MWPTHz2022-67 
Date of Issue 2023-01-16 (PN, EMT, MWPTHz) 
ISSN Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF PN2022-41 EMT2022-79 MWPTHz2022-67

Conference Information
Conference Date 2023-01-23 - 2023-01-24 
Place (in Japanese) (See Japanese page) 
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Paper Information
Registration To MWPTHz 
Conference Code 2023-01-MWPTHz-PN-EMT-EMT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Design of terahertz vortex component made with polarization-independent metasurface with high refractive index and low reflectance 
Sub Title (in English)  
Keyword(1) Terahertz wave  
Keyword(2) Vortex  
Keyword(3) Metasurface  
Keyword(4) Metalens antenna  
1st Author's Name Shunji Yamamori  
1st Author's Affiliation Tokyo University of Agriculture and Technology (TUAT)
2nd Author's Name Kohei Urashima  
2nd Author's Affiliation Tokyo University of Agriculture and Technology (TUAT)
3rd Author's Name Takehito Suzuki  
3rd Author's Affiliation Tokyo University of Agriculture and Technology (TUAT)
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Speaker Author-1 
Date Time 2023-01-24 12:00:00 
Presentation Time 25 minutes 
Registration for MWPTHz 
Paper # PN2022-41, EMT2022-79, MWPTHz2022-67 
Volume (vol) vol.122 
Number (no) no.350(PN), no.351(EMT), no.352(MWPTHz) 
Page pp.53-58 
Date of Issue 2023-01-16 (PN, EMT, MWPTHz) 

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