Perfect dielectric-metamaterial reflector

Slovick, Brian; Yu, Zhi; Berding, M. A.; Krishnamurthy, Srini

doi:10.1103/physrevb.88.165116

Cited by 127 publications

(85 citation statements)

References 33 publications

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“…Resonant response usually accompanies a large reflection, which makes it more feasible for dielectric metasurfaces to operate in a reflection configuration [21,93]. This could be beneficial, for instance, enabling the demonstration of broadband dielectric metasurface mirrors [138][139][140] and optical magnetic mirrors [141,142], without reflection phase reversal in the latter. Using geometric shapes other than spherical or cubic dielectric resonators, one would have more degrees of freedom to tune the frequencies of electric and magnetic resonances, realizing resonant directional scattering.…”

Section: Directional Scatteringmentioning

confidence: 99%

A review of metasurfaces: physics and applications

2016

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Abstract. Metamaterials are composed of periodic subwavelength metal/dielectric structures that resonantly couple to the electric and/or magnetic components of the incident electromagnetic fields, exhibiting properties that not found in nature. This class of micro-and nano-structured artificial media have attracted great interest during the past 15 years and yielded ground-breaking electromagnetic and photonic phenomena. However, the high losses and strong dispersion associated with the resonant responses and the use of metallic structures, as well as the difficulty in fabricating the micro-and nanoscale 3D structures, have hindered practical applications of metamaterials. Planar metamaterials with subwavelength thickness, or metasurfaces, consisting of single-layer or few-layer stacks of planar structures can be readily fabricated using lithography and nanoprinting methods, and the ultrathin thickness in the wave propagation direction can greatly suppress the undesirable losses. Metasurfaces enable a spatially varying optical response (e.g., scattering amplitude, phase, and polarization), mold optical wavefronts into shapes that can be designed at will, and facilitate the integration of functional materials to accomplish active control and greatly enhanced nonlinear response. This paper reviews recent progress in the physics of metasurfaces operating at wavelengths ranging from microwave to visible. We provide an overview of key metasurface concepts such as anomalous reflection and refraction, and introduce metasurfaces based on the PancharatnamBerry phase and Huygens' metasurfaces, as well as their use in wavefront shaping and beam forming applications, followed by a discussion of polarization conversion in fewlayer metasurfaces and their related properties. An overview of dielectric metasurfaces reveals their ability to realize unique functionalities coupled with Mie resonances and their low ohmic losses. We also describe metasurfaces for wave guidance and radiation control, as well as active and nonlinear metasurfaces. Finally, we conclude by providing our opinions of future developments in this rapidly developing research field.

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Section: Directional Scatteringmentioning

confidence: 99%

A review of metasurfaces: physics and applications

2016

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“…We here present and demonstrate a new route for successfully implementing Huygens' sources at optical frequencies that utilizes the strong resonant response from high-permittivity all-dielectric nanoparticles in the visible and near-infrared spectral range [9][10][11][12][13][14][15][16][17][18]. Such nanoparticles support both electric and magnetic dipolar Mie-type modes while, at the same time, exhibiting very low intrinsic losses [19][20].…”

mentioning

confidence: 99%

High‐Efficiency Dielectric Huygens’ Surfaces

Decker

Staude

Falkner

et al. 2015

Advanced Optical Materials

1,200

1,097

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“…It can be shown that, to achieve unity reflectance, the real part of the impedance of the medium must be zero [78]. This condition is achieved when / < 0 and / = / , where the complex permittivity and permittivity are given by + and + , respectively.…”

Section: Perfect Reflectorsmentioning

confidence: 99%

Metasurfaces-Based Absorption and Reflection Control: Perfect Absorbers and Reflectors

Badloe

Mun

Rho

2017

Journal of Nanomaterials

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In the past decade, the realisation of negative index materials has initiated extensive research into metamaterials. Perfect absorbers and reflectors are of particular interest as their usefulness is endless in a range of different fields and devices. Since it was originally shown that a device can achieve unity absorption of electromagnetic waves, it has become a hot area of research to develop perfect absorbers based on polarisation independence and incident angle independence, at a range of frequencies from microwave to optical ones. The amazing performance, flexibility, and tunability of these metamaterials will be discussed here, by presenting the different designs and working mechanisms that have been realised up to now. Their limitations and shortcomings will be addressed and future plans for perfect absorbers and reflectors will be suggested.

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Perfect dielectric-metamaterial reflector

Cited by 127 publications

References 33 publications

A review of metasurfaces: physics and applications

A review of metasurfaces: physics and applications

High‐Efficiency Dielectric Huygens’ Surfaces

Metasurfaces-Based Absorption and Reflection Control: Perfect Absorbers and Reflectors

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