Physical configuration and performance modeling of all-dielectric metamaterials

Ahmadi, Akram; Mosallaei, Hossein

doi:10.1103/physrevb.77.045104

Cited by 168 publications

(113 citation statements)

References 25 publications

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“…Thus, it is interesting to ask whether purely dielectric off-resonant hence low-loss constitutive materials might offer effective magnetic and/or negative-index metamaterials properties as well. Similar for the metallic structures, Mie resonances of dielectric particles play a key role 62 to achieve a negative magnetic permeability µ [63][64][65][66][67][68][69] . It is known from Mie resonance theory that the first resonance of a dielectric sphere is a magnetic-dipole mode (the second resonance for a cylinder).…”

Section: Dielectric Three-dimensional Optical Metamaterialsmentioning

confidence: 99%

Past achievements and future challenges in the development of three-dimensional photonic metamaterials

2011

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Photonic metamaterials are man-made structures composed of tailored micro-or nanostructured metallo-dielectric sub-wavelength building blocks that are densely packed into an effective material. This deceptively simple, yet powerful, truly revolutionary concept allows for achieving novel, unusual, and sometimes even unheard-of optical properties, such as magnetism at optical frequencies, negative refractive indices, large positive refractive indices, zero reflection via impedance matching, perfect absorption, giant circular dichroism, or enhanced nonlinear optical properties. Possible applications of metamaterials comprise ultrahigh-resolution imaging systems, compact polarization optics, and cloaking devices. This review describes the experimental progress recently made fabricating three-dimensional metamaterial structures and discusses some remaining future challenges.

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Section: Dielectric Three-dimensional Optical Metamaterialsmentioning

confidence: 99%

Past achievements and future challenges in the development of three-dimensional photonic metamaterials

2011

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“…The large losses in metallic structures and metamaterials have turned attention to high-permittivity subwavelength low-loss particles with non-overlapping magnetic or electric dipolar resonances [18][19][20][21][22][23] . In particular, dielectric subwavelength spheres of moderate permittivity like silicon 24,25 present strong magnetic and electric dipolar resonances in the visible, as well as in telecom and near-infrared frequencies, where silicon absorption is negligible, without spectral overlap between quadrupolar and higher-order modes 25 .…”

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confidence: 99%

Magnetic and electric coherence in forward- and back-scattered electromagnetic waves by a single dielectric subwavelength sphere

et al. 2012

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Magnetodielectric small spheres present unusual electromagnetic scattering features, theoretically predicted a few decades ago. However, achieving such behaviour has remained elusive, due to the non-magnetic character of natural optical materials or the difficulty in obtaining low-loss highly permeable magnetic materials in the gigahertz regime. Here we present unambiguous experimental evidence that a single low-loss dielectric subwavelength sphere of moderate refractive index (n ¼ 4 like some semiconductors at near-infrared) radiates fields identical to those from equal amplitude crossed electric and magnetic dipoles, and indistinguishable from those of ideal magnetodielectric spheres. The measured scattering radiation patterns and degree of linear polarization (3-9 GHz/33-100 mm range) show that, by appropriately tuning the a/l ratio, zero-backward ('Huygens' source) or almost zeroforward ('Huygens' reflector) radiated power can be obtained. These Kerker scattering conditions only depend on a/l. Our results open new technological challenges from nanoand micro-photonics to science and engineering of antennas, metamaterials and electromagnetic devices.

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“…[6][7][8][9] In another approach, it was shown that NR occurs in photonic, 19,21 and polaritonic crystals. [22][23][24] Recently, Kempa et. al, 25 investigated the electromagnetic response of a cubic point-dipole crystal, and showed that this is a polaritonic crystal that allows for bulk and surface plasmon wave propagation, in addition to the usual photonic crystal effects ͑bands, gaps, etc.͒.…”

Section: Introductionmentioning

confidence: 99%

Negative refraction in three-dimensional point-dipolelike polaritonic crystals

Rose

Kempa

2010

Journal of Applied Physics

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We propose two practical realizations of the point-dipole crystal, shown previously to be capable of negative refraction and other metamaterial and plasmonic properties. These are: an array of highly polarizable spheres, and the complementary array of spherical cavities in a highly polarizable medium. We study light propagation through these polaritonic crystals and show that they are capable of negative refraction, and can be constructed from available materials for experimental demonstrations at both microwave and optical frequencies.

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Physical configuration and performance modeling of all-dielectric metamaterials

Cited by 168 publications

References 25 publications

Past achievements and future challenges in the development of three-dimensional photonic metamaterials

Past achievements and future challenges in the development of three-dimensional photonic metamaterials

Magnetic and electric coherence in forward- and back-scattered electromagnetic waves by a single dielectric subwavelength sphere

Negative refraction in three-dimensional point-dipolelike polaritonic crystals

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