783 citations · 9.5k across the 70 of their papers we have counts for
23 papers · 1 filter
A new perspective on materials for plasmonics
B. Dastmalci, P. Tassin, Th. Koschny +1
Surface plasmon polaritons are electromagnetic waves propagating on the surface of a metal. Thanks to subwavelength confinement to the surface, they can concentrate optical energy…
Electric and Magnetic response in dielectric dark states for low loss subwavelength optical meta atoms
A. Jain, P. Moitra, Th. Koschny +2
Created surfaces or meta surfaces, composed of appropriately shaped sub-wavelength structures, namely, meta-atoms, control light at wavelength scales. Historically, meta surfaces h…
Creating double negative index materials using the Babinet principle with one metasurface
Lei Zhang, Thomas Koschny, Costas M. Soukoulis
Metamaterials are patterned metallic structures which permit access to a novel electromagnetic response, negative index of refraction, impossible to achieve with naturally occurrin…
Reversible modulation and ultrafast dynamics of THz resonances in strongly photoexcited metamaterials
I. Chatzakis, L. Luo, J. Wang +4
We demonstrate an ultrafast reversible modulation of resonant terahertz (THz) response in strongly photoexcited metamaterials. The transient spectral-temporal response of the dipol…
Switching nonlinearity in a superconductor-enhanced metamaterial
Cihan Kurter, Philippe Tassin, Alexander P. Zhuravel +5
We demonstrate a nonlinear metamaterial that can be switched between low and high transmission by controlling the power level of the incident beam. The origin of this nonlinear res…
Planar designs for electromagnetically induced transparency in metamaterials
Philippe Tassin, Lei Zhang, Thomas Koschny +2
We present a planar design of a metamaterial exhibiting electromagnetically induced transparency that is amenable to experimental verification in the microwave frequency band. The…
Optical forces in nanowire pairs and metamaterials
Rongkuo Zhao, Philippe Tassin, Thomas Koschny +1
We study the optical force arising when isolated gold nanowire pairs and metamaterials with a gold nanowire pair in the unit cell are illuminated with laser radiation. Firstly, we…
Large group delay in a microwave metamaterial analogue of electromagnetically induced transparency
Lei Zhang, Philippe Tassin, Thomas Koschny +3
We report on our experimental work concerning a planar metamaterial exhibiting classical electromagnetically induced transparency (EIT). Using a structure with two mirrored split-r…
Conjugated gammadion chiral metamaterial with uniaxial optical activity and negative refractive index
R. Zhao, L. Zhang, J. Zhou +2
We demonstrate numerically and experimentally a conjugated gammadion chiral metamaterial that uniaxially exhibits huge optical activity and circular dichroism, and gives a negative…
Repulsive Casimir Force in Chiral Metamaterials
R. Zhao, J. Zhou, Th. Koschny +2
We demonstrate theoretically that one can obtain repulsive Casimir forces and stable nanolevitations by using chiral metamaterials. By extending the Lifshitz theory to treat chiral…
Nonlinear properties of split-ring resonators
Bingnan Wang, Jiangfeng Zhou, Thomas Koschny +1
In this letter, the properties of split-ring resonators (SRRs) loaded with high-Q capacitors and nonlinear varactors are theoretically analyzed and experimentally measured. We demo…
Strong diamagnetic response of metamaterials
E. N. Economou, Th. Koschny, C. M. Soukoulis
We demonstrate that there is a strong diamagnetic response of metamaterials, consisting of open or closed split ring resonators (SRRs). Detailed numerical work shows that for dense…
An efficient way to reduce losses of left-handed metamaterials
Jiangfeng Zhou, Thomas Koschny, Costas M. Soukoulis
We propose a simple and effective way to reduce the losses in left-handed metamaterials by manipulating the values of the effective parameters R, L, and C. We investigate the role…
Experimental Verification of the Quantized Conductance of Photonic Crystal Waveguides
Weitao Dai, Bingnan Wang, Thomas Koschny +1
We report experiments that demonstrate the quantization of the conductance of photonic crystal waveguides. To obtain a diffusive wave, we have added all the transmitted channels fo…
Size Dependence and Convergence of the Retrieval Parameters of Metamaterials
Jiangfeng Zhou, Thomas Koschny, Maria Kafesaki +1
We study the dependence of the retrieval parameters, such as the electric permittivity, the magnetic permeability and the index of refraction, , on the size of the unit cell of…
Magnetic and Electric Excitations in Split Ring Resonators
Jiangfeng Zhou, Thomas Koschny, Costas M. Soukoulis
We studied the electric and magnetic resonance of U-shaped SRRs. We showed that higher order excitation modes exist in both of the electric and magnetic resonances. The nodes in th…
Limits on the amplification of evanescent waves of left-handed materials
Th. Koschny, R. Moussa, C. M. Soukoulis
We investigate the transfer function of the discretized perfect lens in finite-difference time-domain (FDTD) and transfer matrix (TMM) simulations; the latter allow to eliminate th…
Isotropic three-dimensional left-handed meta-materials
Th. Koschny, L. Zhang, C. M. Soukoulis
We investigate three-dimensional left-handed and related meta-materials based on a fully symmetric multi-gap single-ring SRR design and crossing continuous wires. We demonstrate is…
Magnetic metamaterials at telecommunication and visible frequencies
C. Enkrich, M. Wegener, S. Linden +6
Arrays of gold split-rings with 50-nm minimum feature size and with an LC resonance at 200-THz frequency (1500-nm wavelength) are fabricated. For normal incidence conditions, they…
Impact of the inherent periodic structure on the effective medium description of left-handed and related meta-materials
Th. Koschny, P. Markos, E. N. Economou +3
We study the frequency dependence of the effective electromagnetic parameters of left-handed and related meta-materials of the split ring resonator and wire type. We show that the…
Electric coupling to the magnetic resonance of split ring resonators
N. Katsarakis, T. Koschny, M. Kafesaki +2
We study both theoretically and experimentally the transmission properties of a lattice of split ring resonators (SRRs) for different electromagnetic (EM) field polarizations and p…
Effective medium theory of left-handed materials
T. Koschny, M. Kafesaki, E. N. Economou +1
We analyze the transmission and reflection data obtained through transfer matrix calculations on metamaterials of finite lengths, to determine their effective permittivity and perm…
Resonant and anti-resonant frequency dependence of the effective parameters of metamaterials
T. Koschny, P. Markos, D. R. Smith +1
We present a numerical study of the electromagnetic response of the metamaterial elements that are usedto construct materials with negative refractive index. For an array of split…