Transverse Scattering and Generalized Kerker Effects in All-Dielectric Mie-Resonant Metaoptics

Shamkhi, Hadi K.; Baryshnikova, Kseniia V.; Sayanskiy, Andrey; Kapitanova, Polina; Terekhov, Pavel D.; Belov, Pavel A.; Karabchevsky, Alina; Evlyukhin, Andrey B.; Kivshar, Yuri S.; Shalin, Alexander S.

doi:10.1103/physrevlett.122.193905

Cited by 167 publications

(101 citation statements)

References 43 publications

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“…The constitutive building blocks (i.e. meta-atoms) of the invisible metasurfaces are "transverse scatterers" and have been extensively investigated in our previous work [32]. We show here the duality of the Kerker and anti-Kerker conditions governing the transverse scattering of single scatterers still holds for invisible lattices in the subdiffractive regime regardless of variations in the lattice parameter.…”

Section: Introductionmentioning

confidence: 75%

Transparency and perfect absorption of all-dielectric resonant metasurfaces governed by the transverse Kerker effect

Shamkhi

Sayanskiy

Valero

et al. 2019

Phys. Rev. Materials

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Dielectric metasurfaces perform unique photonics effects and serve as the engine of nowadays lightmatter technologies. Here, we suggest theoretically and demonstrate experimentally the realization of a high transparency effect in a novel type of all-dielectric metasurface, where each constituting meta-atom of the lattice presents the so-called transverse Kerker effect. In contrast to Huygens' metasurfaces, both phase and amplitude of the incoming wave remain unperturbed at the resonant frequency and, consequently, our metasurface totally operates in the invisibility regime. We prove experimentally, for the microwave frequency range, that both phase and amplitude of the transmitted wave from the metasurface remain almost unaffected. Finally, we demonstrate both numerically and experimentally and explain theoretically in detail a novel mechanism to achieve perfect absorption of the incident light enabled by the resonant response of the dielectric metasurfaces placed in the vicinity of a conducting substrate. In the subdiffractive limit, we show the aforementioned effects are mainly determined by the optical response of the constituting meta-atoms rather than the collective lattice contributions. With the spectrum scalability, our findings can be incorporated in engineering devices for energy harvesting, nonlinear phenomena and filters applications.

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Section: Introductionmentioning

confidence: 75%

Transparency and perfect absorption of all-dielectric resonant metasurfaces governed by the transverse Kerker effect

Shamkhi

Sayanskiy

Valero

et al. 2019

Phys. Rev. Materials

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“…Basically, the reduced refractive index contrast between sapphire and the refractive index matching layer can effectively suppress the reflection from the substrate. Similar to the situation to match the Kerker condition 20,40 Fig. 1 The direct comparison of different structural color technologies in spatial resolution, manufacturability, reflectance (or transmittance), FWHM ratio, and gamut.…”

Section: Resultsmentioning

confidence: 97%

All-dielectric metasurface for high-performance structural color

et al. 2020

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The achievement of structural color has shown advantages in large-gamut, high-saturation, high-brightness, and high-resolution. While a large number of plasmonic/dielectric nanostructures have been developed for structural color, the previous approaches fail to match all the above criterion simultaneously. Herein we utilize the Si metasurface to demonstrate an all-in-one solution for structural color. Due to the intrinsic material loss, the conventional Si metasurfaces only have a broadband reflection and a small gamut of 78% of sRGB. Once they are combined with a refractive index matching layer, the reflection bandwidth and the background reflection are both reduced, improving the brightness and the color purity significantly. Consequently, the experimentally demonstrated gamut has been increased to around 181.8% of sRGB, 135.6% of Adobe RGB, and 97.2% of Rec.2020. Meanwhile, high refractive index of silicon preserves the distinct color in a pixel with 2 × 2 array of nanodisks, giving a diffraction-limit resolution.

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“…Microprint and holography are often used as two separate optical encryption strategies applied in independent metasurface devices, which can be achieved by controlling over plasmonic [ 29–34 ] or all‐dielectric [ 35–40 ] structures at the nanoscale. To strengthen optical information security, other parametric freedoms such as polarization, [ 41–45 ] wavelength, [ 17,46–49 ] and spatial freedom [ 50–52 ] have been explored to achieve multiplexed microprint or holography encryption devices.…”

Section: Introductionmentioning

confidence: 99%

Integrated Metasurfaces with Microprints and Helicity‐Multiplexed Holograms for Real‐Time Optical Encryption

Luo

et al. 2020

Advanced Optical Materials

125

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many irreplaceable advantages of high storage capacity, miniaturization, multi plicity, and integration capability. [6][7][8][9][10][11] Among various microoptics/nano optics devices, metasurface, consisting of planar subwavelength structures, has emerged as a particularly powerful plat form for modulating light parameters such as amplitude, [12,13] phase, [14][15][16] wavelength, [17][18][19][20] polarization, [4,[21][22][23] and hybrid parameters, [24,25] which provides the possibility of potential applications of information encryption, data storage, and optical communication. [26][27][28] Microprint and holography are often used as two separate optical encryption strategies applied in independent meta surface devices, which can be achieved by controlling over plasmonic [29][30][31][32][33][34] or all dielectric [35][36][37][38][39][40] structures at the nanoscale. To strengthen optical information secu rity, other parametric freedoms such as polarization, [41][42][43][44][45] wavelength, [17,[46][47][48][49] and spatial freedom [50][51][52] have been explored to achieve multiplexed microprint or holography encryption devices. Very recently, attempts have been imple mented to combine the microprint and holography in a single device. [53][54][55] However, although the combination of holography and microprints brings about the increase of encrypted dimen sions, crosstalk between different channels remains a thorny problem, and devices will not transmit repeatedly between senders and receivers once fabricated. Fabry-Pérot (FP) cavity resonators with narrow spectral linewidth can effectively sup press crosstalk and can be integrated to act as color filters, [56,57] which provides a potential solution. However, significant chal lenges such as realtime encryption, transmission security, and data compactness still need to be overcome.Here, we propose a novel type of metasurfacebased device that combines color FP cavitybased microprint and helicity multiplexed metahologram. Such devices have the encryption dimensions of microprint, holography as well as helicity at the same time by independently manipulating the amplitude, phase, and polarization of the incident light. A specific algo rithmic framework is developed to combine holography with structural color, and the particle swarm optimization (PSO) algorithm is built to optimize the conversion efficiencies of metasurface elements. Furthermore, enabled by a microprint of editable quick response (QR) code, a realtime encryption Optical encryption with multichannel, high complexity, and artistry characteristics has become one of the most significant approaches for modern information security. Recently emerged metasurface-based optics consisting of planar subwavelength metamaterials has been engineered as an ideal platform for optical encryption because of its capability of manipulating various optical parameters and enhancing information storage capacity. However, limited encrypted channels and insufficient real-time encryption abilities hinder its practical applicatio...

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Transverse Scattering and Generalized Kerker Effects in All-Dielectric Mie-Resonant Metaoptics

Cited by 167 publications

References 43 publications

Transparency and perfect absorption of all-dielectric resonant metasurfaces governed by the transverse Kerker effect

Transparency and perfect absorption of all-dielectric resonant metasurfaces governed by the transverse Kerker effect

All-dielectric metasurface for high-performance structural color

Integrated Metasurfaces with Microprints and Helicity‐Multiplexed Holograms for Real‐Time Optical Encryption

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