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Arrays of Ag split-ring resonators coupled to InGaAs single-quantum-well gain
Nina Meinzer, Matthias Ruther, Stefan Linden +6
We study arrays of silver split-ring resonators operating at around 1.5-μm wavelength coupled to an MBE-grown single 12.7-nm thin InGaAs quantum well separated only 4.8 nm from the…
Self-consistent calculations of loss compensated fishnet metamaterials
Anan Fang, Thomas Koschny, Costas M. Soukoulis
We present a computational approach, allowing for a self-consistent treatment of three-dimensional (3D) fishnet metamaterial coupled to a gain material incorporated into the nanost…
Chiral metamaterials with negative refractive index based on four "U" split ring resonators
Zhaofeng Li, Rongkuo Zhao, Thomas Koschny +5
A uniaxial chiral metamaterial is constructed by double-layered four "U" split ring resonators mutually twisted by 90 degrees. It shows a giant optical activity and circular dichro…
Chiral metamaterials: retrieval of the effective parameters with and without substrate
Rongkuo Zhao, Thomas Koschny, Costas M. Soukoulis
After the prediction that strong enough optical activity may result in negative refraction and negative reflection, more and more artificial chiral metamaterials were designed and…
Wide-angle and polarization-independent chiral metamaterial absorber
Bingnan Wang, Thomas Koschny, Costas M. Soukoulis
We propose a resonant microwave absorber based on a chiral metamaterial. We show, with both numerical simulations and experimental measurements, that the absorber works well for a…
Reducing Ohmic Losses in Metamaterials by Geometric Tailoring
Durdu O. Guney, Thomas Koschny, Costas M. Soukoulis
Losses in metamaterials render the applications of such exotic materials less practical unless an efficient way of reducing them is found. We present two different techniques to re…
Intra-connected three-dimensionally isotropic bulk negative index photonic metamaterial
Durdu O. Guney, Thomas Koschny, Costas M. Soukoulis
Isotropic negative index metamaterials (NIMs) are highly desired, particularly for the realization of ultra-high resolution lenses. However, existing isotropic NIMs function only t…
Twisted split-ring-resonator photonic metamaterial with huge optical activity
M. Decker, R. Zhao, C. M. Soukoulis +2
Coupled split-ring-resonator metamaterials have previously been shown to exhibit large coupling effects, which are a prerequisite for obtaining large effective optical activity. By…