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Title: Monolithic Superconducting Emitter of Tunable Circularly Polarized Terahertz Radiation
Authors: Elarabi, A.
Yoshioka, Y.
Tsujimoto, M.
Kakeya, I.
Author's alias: エルアラビ, アセム
吉岡, 佑介
辻本, 学
掛谷, 一弘
Issue Date: 29-Dec-2017
Publisher: American Physical Society
Journal title: Physical Review Applied
Volume: 8
Issue: 6
Thesis number: 064034
Abstract: We propose an approach to controlling the polarization of terahertz (THz) radiation from intrinsic Josephson-junction stacks in a single crystalline high-temperature superconductor Bi₂Sr₂CaCu₂O₈. Monolithic control of the surface high-frequency current distributions in the truncated square mesa structure allows us to modulate the polarization of the emitted terahertz wave as a result of two orthogonal fundamental modes excited inside the mesa. Highly polarized circular terahertz waves with a degree of circular polarization of more than 99% can be generated using an electrically controlled method. The intuitive results obtained from the numerical simulation based on the conventional antenna theory are consistent with the observed emission characteristics.
Description: 超高密度移動体通信を可能にするテラヘルツ光源の開発 --モノリシック高温超伝導デバイスから円偏光電磁波の放射に成功--. 京都大学プレスリリース. 2018-01-04.
Rights: © 2017 American Physical Society
DOI(Published Version): 10.1103/PhysRevApplied.8.064034
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