Retrieving effective parameters for metamaterials at oblique incidence

Menzel, Christoph; Rockstuhl, Carsten; Paul, Thomas; Lederer, F.; Pertsch, Thomas

doi:10.1103/physrevb.77.195328

Cited by 228 publications

(229 citation statements)

References 25 publications

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“…2. However, we will not consider spatial dispersion and anisotropy, since the structure in question is designed strictly for normal incidence [36][37][38][39][40].…”

Section: Influence Of Dispersion and Losses On Metaspacersmentioning

confidence: 99%

On Negative Index Metamaterial Spacers and Their Unusual Optical Properties

Aslam¹

2013

PIER B

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Abstract-We theoretically investigate the possibility of using a metamaterial structure as a spacer, named as metaspacer, which can be integrated with other materials in microfabrication. We show that such metaspacers can provide new optical behaviors that are not possible through conventional spacers. In particular, we investigate negative index metaspacers embedded in fishnet metamaterial structures and compare them with conventional fishnet metamaterial structures. We show that the negative index metaspacer based fishnet structure exhibits intriguing inverted optical response. We also observe that the dependence of the resonance frequency on the geometric parameters is reversed. We conclude with practicality of these metaspacers.

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“…2. However, we will not consider spatial dispersion and anisotropy, since the structure in question is designed strictly for normal incidence [36][37][38][39][40].…”

Section: Influence Of Dispersion and Losses On Metaspacersmentioning

confidence: 99%

On Negative Index Metamaterial Spacers and Their Unusual Optical Properties

Aslam¹

2013

PIER B

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“…32 We will determine the effective propagation constant in the SCiC by using the S-parameter retrieval method. 33,34 The complex reflection and transmission coefficients are numerically calculated by the Fourier modal method 35 where 31ϫ 31 Fourier orders were retained to achieve convergent results. By inversion of these scattering data the effective propagation constant k = k z and the effective impedance Z can be determined.…”

Section: Homogeneitymentioning

confidence: 99%

High symmetry versus optical isotropy of a negative-index metamaterial

et al. 2010

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Optically isotropic metamaterials ͑MMs͒ are required for the implementation of subwavelength imaging systems. At first glance one would expect that their design should be based on unit cells exhibiting a cubic symmetry being the highest crystal symmetry. It is anticipated that this is a sufficient condition since it is usually assumed that light does not resolve the spatial details of MM but experiences the properties of an effective medium, which is then optically isotropic. In this work we challenge this assumption by analyzing the isofrequency surfaces of the dispersion relation of the split cube in carcass negative index MM. We show that this MM is basically optically isotropic but not in the spectral domain where it exhibits negative refraction. The primary goal of this contribution is to introduce a tool that allows to probe a MM against optical isotropy.

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“…show the real and imaginary part of the refractive index for the metamaterial depending on the number of functional layers. They were retrieved by inverting the complex reflection and transmission coefficients [226]. All calculations were made by using the Fourier Modal Method [227], but any other method of solving Maxwell's equations on rigorous grounds could have been used equally well.…”

Section: Properties Of Finite Systemsmentioning

confidence: 99%

3D THz metamaterials from micro/nanomanufacturing

Moser

Rockstuhl

2011

Laser & Photonics Reviews

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Metamaterials are engineered composite materials offering unprecedented control of wave propagation. Despite their complexity, effective properties can frequently be extracted by conceptualizing them as homogeneous and isotropic media with dispersive electric permittivity and magnetic permeability. For an ideal isotropic medium, strong dispersion in these properties causes wave and field vectors to form a left-handed (E,H,k)-frame involving backward waves, and offering control of quantities like the refractive index which may become negative. Experimental evidence exists from microwaves to the visible. Applications include sub-wavelength-resolution imaging, invisibility cloaking, plasmonics-based lasers, metananocircuits, and omnidirectional absorbers. As the engineered sub-structures must be smaller than their design wavelength, micro/nanomanufacturing is exploited from primary pattern generation over lithography to templating and molecular beam epitaxy. 3D metamaterials have been made by stacking of layers, multilayer structuring, and 3D primary pattern generation. Theory shows that full properties may build up over one or a very few layers.

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Retrieving effective parameters for metamaterials at oblique incidence

Cited by 228 publications

References 25 publications

On Negative Index Metamaterial Spacers and Their Unusual Optical Properties

On Negative Index Metamaterial Spacers and Their Unusual Optical Properties

High symmetry versus optical isotropy of a negative-index metamaterial

3D THz metamaterials from micro/nanomanufacturing

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