Giant rotary power of a fishnet-like metamaterial
Source abstract
Abstract
We show experimentally and numerically that cholesteric-type metal-dielectric structures, made of twisted sub-wavelength hole elliptical–shaped arrays, exhibit strong optical activity and circular dichroism. The experimental demonstration is carried out with terahertz time-domain spectroscopy measurements on a three layered structure operating around 0.5 THz, leading to a rotary power as high as 1000°/wavelength. The contribution of the chirality factor (κ), permittivity (ɛ), and permeability (μ) is discussed after the retrieval of effective parameters from the complex scattering ones.
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Research context
OpenAlex topics: Metamaterials and Metasurfaces Applications · Plasmonic and Surface Plasmon Research · Advanced Antenna and Metasurface Technologies
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Affiliations
Université de Lille 1 1 Institut d'Électronique de Microélectronique et Nanotechnologies, , Avenue Poincaré BP 60069, 59652 Villeneuve d’Ascq Cedex, France
Wuhan Textile University 2 School of Electronics and Electrical Engineering, , Hubei, Wuhan, People's Republic of China
Université de Savoie 3 Laboratoire IMEP-LAHC, , 73376 Le Bourget du Lac Cedex, France
References (20)
Show source-provided references
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