期刊
ELECTRONICS
卷 11, 期 24, 页码 -出版社
MDPI
DOI: 10.3390/electronics11244195
关键词
terahertz; chiral metasurface; coding metasurface; circular dichroism; Pancharatnam-Berry phase
资金
- National Key R&D Program of China [2022YFF0604801]
- National Natural Science Foundation of China [62271056, 62171186, 62201037, 61527805]
- Beijing Natural Science Foundation of China-Haidian Original Innovation Joint Fund [L222042]
- Beijing Natural Science Foundation [4154085]
- Open Research Fund of State Key Laboratory of Space-Ground Integrated Information Technology [6142221200201]
- Basic Research Foundation of Beijing Institute of Technology, China [BITBLR2020014]
- 111 Project of China [B14010]
A triple-band terahertz chiral metasurface is proposed in this study, which achieves spin-selective absorption effect and efficient independent phase manipulation. The mechanism of absorption effect in different frequency bands is explained through simulations, and the manipulation of reflection phase is realized by introducing Pancharatnam-Berry phase.
In this paper, a triple-band terahertz chiral metasurface is proposed, which could realize spin-selective absorption (SSA) effect and efficient independent phase manipulation in three distinct frequency bands. Through the simulation of the surface current distribution, we explain the mechanism of the triple-band SSA effect. Furthermore, the introduction of Pancharatnam-Berry phase endows the metasurface with the ability to manipulate the reflection phase at the chiral resonance frequencies, which enabled simultaneous amplitude and phase manipulation of CP waves through different phase coding strategies. To test this concept, two terahertz SSA-coding metasurfaces were designed and simulated, which have the function of four-beam splitting and vortex wave anomalous reflection, respectively. These simple-structured multifunctional devices demonstrate the application prospects of the metasurface in terahertz chiral sensing, imaging, secure communications, etc.
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