Volume 119, Number 4, August 2017
|Number of page(s)||4|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||06 November 2017|
Broadband terahertz reflector based on dielectric metamaterials
1 Institute of Electromagnetics and Acoustics, Department of Electronic Science, Xiamen University Xiamen 361005, China
2 School of Physics, China University of Mining and Technology - Xuzhou 221116, China
3 Department of Electrical and Computer Engineering, Duke University - Durham, NC 27708, USA
Received: 11 August 2017
Accepted: 16 October 2017
An isotropic reflector with near-unity reflectivity is shown based on the three-dimensional monolayer microparticles consisting of ceramic cube arrays. Numerical results show that a broad reflective band with high performance can be excited in an array of dielectric cubes. Meanwhile, from the calculated data, it is observed that the designed reflector is independent of the incidence angle for the transverse electric and transverse magnetic polarizations. In principle, high reflectivity can be realized at arbitrary wavelengths of interest where only a single dielectric layer is required. This work may provide a convenient route to design adaptive metamaterials.
PACS: 78.20.-e – Optical properties of bulk materials and thin films / 78.67.Pt – Multilayers; superlattices; photonic structures; metamaterials
© EPLA, 2017
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