High-quality trapped modes in all-dielectric metamaterials

Tuz, Vladimir R.; Khardikov, Vyacheslav V.; Kupriianov, Anton S.; Domina, Kateryna L.; Xu, Su; Wang, Hai; Sun, Hong‐Bo

doi:10.1364/oe.26.002905

Cited by 129 publications

(94 citation statements)

References 33 publications

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“…The chain of dielectric disks guiding the anapole excitation was proposed by Mazzone and co-workers in [123]. It was shown that such waveguides are extremely robust against physical bending and splitting, and that the anapole state is efficiently transmitted through the S-shaped bend waveguide [141][142][143][144][145][146][147]. (c) Example of evolution of the reflectance spectrum of the metasurface from the symmetric geometry ( = 0) to a broken-symmetry geometry ( = 0.25).…”

Section: Metamaterials and Metasurfacesmentioning

confidence: 99%

Nonradiating photonics with resonant dielectric nanostructures

et al. 2019

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Nonradiating sources of energy have traditionally been studied in quantum mechanics and astrophysics, while receiving a very little attention in the photonics community. This situation has changed recently due to a number of pioneering theoretical studies and remarkable experimental demonstrations of the exotic states of light in dielectric resonant photonic structures and metasurfaces, with the possibility to localize efficiently the electromagnetic fields of high intensities within small volumes of matter. These recent advances underpin novel concepts in nanophotonics, and provide a promising pathway to overcome the problem of losses usually associated with metals and plasmonic materials for the efficient control of the light-matter interaction at the nanoscale. This review paper provides the general background and several snapshots of the recent results in this young yet prominent research field, focusing on two types of nonradiating states of light that both have been recently at the center of many studies in all-dielectric resonant meta-optics and metasurfaces: optical anapoles and photonic bound states in the continuum. We discuss a brief history of these states in optics, their underlying physics and manifestations, and also emphasize their differences and similarities. We also review some applications of such novel photonic states in both linear and nonlinear optics for the nanoscale field enhancement, a design of novel dielectric structures with high-resonances, nonlinear wave mixing and enhanced harmonic generation, as well as advanced concepts for lasing and optical neural networks. arXiv:1903.04756v1 [physics.optics]

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Section: Metamaterials and Metasurfacesmentioning

confidence: 99%

Nonradiating photonics with resonant dielectric nanostructures

et al. 2019

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“…Such geometry in the metasurface has been considered earlier in several papers. 29,35,38 Another modification corresponding to the C s (2) group has the orientation of particles, where in a pair of disks, the holes are oriented inward of the unit super-cell, whereas in an another pair of disks, the holes are oriented outward. For this case, the unit super-cell is symmetric with respect to the plane x = 0.…”

Section: F Array With Cs Symmetrymentioning

confidence: 99%

All-dielectric metasurfaces with trapped modes: Group-theoretical description

Kupriianov

Dmitriev

et al. 2019

Journal of Applied Physics

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An all-dielectric metasurface featuring resonant conditions of the trapped mode excitation is considered. It is composed of a lattice of subwavelength particles which are made of a high-refractive-index dielectric material structured in the form of disks. Each particle within the lattice behaves as an individual dielectric resonator supporting a set of electric and magnetic (Mie-type) modes. In order to access a trapped mode (which is the TE 01δ mode of the resonator), a round eccentric penetrating hole is made in the disk. In the lattice, the disks are arranged into clusters (unit super-cells) consisting of four particles. Different orientations of holes in the super-cell correspond to different symmetry groups producing different electromagnetic response of the overall metasurface when it is irradiated by the linearly polarized waves with normal incidence. We perform a systematic analysis of the electromagnetic response of the metasurface as well as conditions of the trapped mode excitation involving the group-theoretical description, representation theory and microwave circuit theory. Both polarization-sensitive and polarization-insensitive arrangements of particles and conditions for dynamic ferromagnetic and antiferromagnetic order are derived. Finally, we observe the trapped mode manifestation in the microwave experiment.

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“…The corresponding quality factors of leaky resonances depend on the degree of the introduced structural asymmetry [20]. The concept of manipulating the transition between the symmetry-protected BICs and leaky resonances was first proposed for plasmonic metasurfaces composed of metallic split-ring resonators [21], and then it was developed for all-dielectric metasurfaces [22][23][24][25][26][27][28][29][30][31]. The recent development in topological photonics has demonstrated a wide class of topologically protected states [32].…”

Section: Introductionmentioning

confidence: 99%

Metasurface Engineering through Bound States in the Continuum

et al. 2019

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Metasurfaces have attracted a lot of attention in recent years due to novel ways they provide for the efficient wavefront control and engineering of the resonant transmission. We discuss an approach allowing effectively control appearance of the sharp Fano resonances in metasurfaces associated with the bound states in the continuum. We demonstrate that by breaking the symmetry transversely, in the direction perpendicular to a metasurface with a complex unit cell, we can control the number, frequency, and type of high-Q resonances originating from bound states in the continuum. As example, we demonstrate experimentally the metasurfaces with magnetic dipole and toroidal dipole responses governed by the physics of multipolar bound states.

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High-quality trapped modes in all-dielectric metamaterials

Cited by 129 publications

References 33 publications

Nonradiating photonics with resonant dielectric nanostructures

Nonradiating photonics with resonant dielectric nanostructures

All-dielectric metasurfaces with trapped modes: Group-theoretical description

Metasurface Engineering through Bound States in the Continuum

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