We report emissions of circular polarized electromagnetic waves from cylindrically shaped mesa structures of the high-temperature superconductor Bi2Sr2CaCu2O8+δ. The frequency range of circularly polarized emission of a cylindrical mesa with notched sides is between 400 and 430 GHz, which is wider than expected by the patch antenna theory. Three maxima recognized in emission intensity are presumably attributed to excitations of fundamental orthogonal modes and circularly polarized modes. Along with the demonstration of circularly polarized emission from truncated edge square mesas, the obtained results provide a wide variety of engineering designs of compact and solid-state electromagnetic sources which are able to generate circularly-polarized terahertz waves.
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30 July 2018
Research Article|
July 30 2018
Circularly polarized terahertz radiation monolithically generated by cylindrical mesas of intrinsic Josephson junctions
Asem Elarabi
;
Asem Elarabi
a)
1
Department of Electronic Science and Engineering, Kyoto University
, Nishikyo, Kyoto 615-8510, Japan
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Yusuke Yoshioka;
Yusuke Yoshioka
1
Department of Electronic Science and Engineering, Kyoto University
, Nishikyo, Kyoto 615-8510, Japan
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Manabu Tsujimoto;
Manabu Tsujimoto
1
Department of Electronic Science and Engineering, Kyoto University
, Nishikyo, Kyoto 615-8510, Japan
2
Faculty of Pure and Applied Sciences, University of Tsukuba
, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
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Itsuhiro Kakeya
Itsuhiro Kakeya
a)
1
Department of Electronic Science and Engineering, Kyoto University
, Nishikyo, Kyoto 615-8510, Japan
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Appl. Phys. Lett. 113, 052601 (2018)
Article history
Received:
May 15 2018
Accepted:
July 17 2018
Citation
Asem Elarabi, Yusuke Yoshioka, Manabu Tsujimoto, Itsuhiro Kakeya; Circularly polarized terahertz radiation monolithically generated by cylindrical mesas of intrinsic Josephson junctions. Appl. Phys. Lett. 30 July 2018; 113 (5): 052601. https://doi.org/10.1063/1.5040159
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