A metamaterial absorber for the terahertz regime: Design, fabrication and characterization
Materials Science
2009-11-13 v1
Abstract
We present a metamaterial that acts as a strongly resonant absorber at terahertz frequencies. Our design consists of a bilayer unit cell which allows for maximization of the absorption through independent tuning of the electrical permittivity and magnetic permeability. An experimental absorptivity of 70% at 1.3 terahertz is demonstrated. We utilize only a single unit cell in the propagation direction, thus achieving an absorption coefficient = 2000 cm. These metamaterials are promising candidates as absorbing elements for thermally based THz imaging, due to their relatively low volume, low density, and narrow band response.
Keywords
Cite
@article{arxiv.0803.1646,
title = {A metamaterial absorber for the terahertz regime: Design, fabrication and characterization},
author = {Hu Tao and Nathan I. Landy and Christopher M. Bingham and Xin Zhang and Richard D. Averitt and Willie J. Padilla},
journal= {arXiv preprint arXiv:0803.1646},
year = {2009}
}