Controlling high-
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 trapped modes in polarization-insensitive all-dielectric metasurfaces

Sayanskiy, Andrey; Kupriianov, Anton S.; Xu, Su; Kapitanova, Polina; Dmitriev, Victor; Khardikov, Vyacheslav V.; Tuz, Vladimir R.

doi:10.1103/physrevb.99.085306

Cited by 71 publications

(45 citation statements)

References 44 publications

(50 reference statements)

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“…Moreover, Eq. (6) shows that the anapole conditions in periodic structures imply the light transmission through a resonant system without perturbation of both amplitude and phase | | = 1, = 0, which could be referred to a lattice invisibility effect [101,102], when electromagnetic energy is accumulated in scatterers but the total electromagnetic fields outside the scatterers mimic the incident fields without distortion. On the contrary, since BICs possess infinite factors, they cannot couple to radiation channels and accumulate energy when excited from the far field.…”

Section: Differences and Similaritiesmentioning

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: Differences and Similaritiesmentioning

confidence: 99%

Nonradiating photonics with resonant dielectric nanostructures

et al. 2019

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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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“…All-dielectric metasurfaces with multiple functions are realized based on the Mie resonances of dielectric particles, such as flat lenses [ 12 , 13 ], sensors [ 14 ], and beam shaping [ 15 ]. Various kinds of high Q-factor resonances have been studied in all-dielectric metamaterials [ 14 , 16 , 17 , 18 , 19 ]. On the other hand, graphene has attracted considerable interest because of its unique properties of ultra-high electron mobility and tunable carrier density.…”

Section: Introductionmentioning

confidence: 99%

Switchable Electromagnetically Induced Transparency with Toroidal Mode in a Graphene-Loaded All-Dielectric Metasurface

et al. 2020

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Active photonics based on graphene has attracted wide attention for developing tunable and compact optical devices with excellent performances. In this paper, the dynamic manipulation of electromagnetically induced transparency (EIT) with high quality factors (Q-factors) is realized in the optical telecommunication range via the graphene-loaded all-dielectric metasurface. The all-dielectric metasurface is composed of split Si nanocuboids, and high Q-factor EIT resonance stems from the destructive interference between the toroidal dipole resonance and the magnetic dipole resonance. As graphene is integrated on the all-dielectric metasurface, the modulation of the EIT window is realized by tuning the Fermi level of graphene, engendering an appreciable modulation depth of 88%. Moreover, the group velocity can be tuned from c/1120 to c/3390. Our proposed metasurface has the potential for optical filters, modulators, and switches.

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Controlling high- Q trapped modes in polarization-insensitive all-dielectric metasurfaces

Cited by 71 publications

References 44 publications

Nonradiating photonics with resonant dielectric nanostructures

Nonradiating photonics with resonant dielectric nanostructures

Metasurface Engineering through Bound States in the Continuum

Switchable Electromagnetically Induced Transparency with Toroidal Mode in a Graphene-Loaded All-Dielectric Metasurface

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