期刊
PHYSICS LETTERS A
卷 383, 期 8, 页码 789-792出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physleta.2018.11.039
关键词
Plasmonic lenses; Terahertz; Broadband; Focusing
资金
- National Natural Science Foundation of China [61405087, 61865009, 61465008]
Plasmonic planar lenses on silicon substrate are designed to realize terahertz (THz) wave focusing. Super-unit-cells containing eight different resonant units are presented to construct eight concentric rings on the silicon substrate. By controlling of the position distribution of the resonant units, it is shown that focusing at 4.3 THz can be achieved. Moreover, due to that the eight units can steer THz wave and keep phase gradient in frequency range of 4.2 to 4.5 THz, the metalenses can realize broadband THz focusing. The results imply the potential applications in THz wave control devices of light collection and multichannel optical communication. (C) 2018 Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据