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Journal of Nanophotonics

Ultradirectional optical nanoantennas with high radiation efficiency by core–shell nanoparticles
Author(s): Zhenya Meng; Hailin Cao; Di Zhou; Zhoujian Chen; Chengzhuo Zhu; Shiyong Chen; Xiaoheng Tan; Yongliang Zhang
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Paper Abstract

A Yagi-Uda-like optical nanoantenna consisting of metallo-dielectric core–shell nanoparticles has been proposed, and its major characteristics have been investigated theoretically and numerically. Compared with all-dielectric nanoantennas and plasmonic nanoantennas, the proposed nanoantenna may exhibit better directivity and Purcell factor. In addition, the antenna shows high radiation efficiency over 65% for broadband operation as well. This core–shell nanoantenna, allowing a more compact design, may find potential applications in nanoscale lasers, photovoltaic, and energy-harvesting devices.

Paper Details

Date Published: 1 February 2017
PDF: 12 pages
J. Nanophoton. 11(1) 016005 doi: 10.1117/1.JNP.11.016005
Published in: Journal of Nanophotonics Volume 11, Issue 1
Show Author Affiliations
Zhenya Meng, Chongqing Univ. (China)
Hailin Cao, Chongqing Univ. (China)
Di Zhou, Chongqing Univ. (China)
Zhoujian Chen, Chongqing Univ. (China)
Chengzhuo Zhu, Chongqing Univ. (China)
Shiyong Chen, Chongqing Univ. (China)
Xiaoheng Tan, Chongqing Univ. (China)
Yongliang Zhang, Technical Institute of Physics and Chemistry (China)

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