Dielectric Resonance-Based Optical Metasurfaces: From Fundamentals to Applications

Liu, Wenwei; Li, Zhancheng; Cheng, Hua; Chen, Shuqi

doi:10.1016/j.isci.2020.101868

Cited by 41 publications

(22 citation statements)

References 190 publications

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“…with i = j = k, ε 0 the vacuum permittivity, E i (ω) the ith Cartesian component of the electric field at ω, and χ (2) ijk the second-order susceptibility, which in the case of AlGaAs was set to 200 pm V −1 [30]. In our simulations the dielectric nanodiscs were the sole sources of SH since both the LC and the AlOx substrate have negligible χ (2) [31].…”

Section: Numerical Simulationsmentioning

confidence: 99%

“…All-dielectric metasurfaces are attracting increasing interest from the scientific community for optical wavefront manipulation [1][2][3]. The possibility of controlling the phase of the light scattered by each unit of the metasurface and the lossless nature of the optical resonances in high refractive index dielectric nanostructures are key assets [4,5].…”

Section: Introductionmentioning

confidence: 99%

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Tunable second harmonic generation by an all-dielectric diffractive metasurface embedded in liquid crystals

et al. 2022

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We experimentally demonstrate the possibility to modulate the second harmonic power emitted by nonlinear AlGaAs metasurfaces embedded in a liquid crystal (LC) matrix. This result is obtained by changing the relative in-plane orientation between the LC director and the linear polarization of the light at the excitation wavelength. According to numerical simulations, second-harmonic is efficiently radiated by the metasurfaces thanks to the sizeable second-order susceptibility of the material and the resonant excitation of either electric or magnetic dipole field distributions inside each meta-atom at the illuminating fundamental wavelength. This resonant behavior strongly depends on the geometric parameters, the crystallographic orientation, and the anisotropy of the metasurface, which can be optimized to modulate the emitted second harmonic power by about one order of magnitude. The devised hybrid platforms are therefore appealing in view of enabling the electrical control of flat nonlinear optical devices.

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Section: Numerical Simulationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tunable second harmonic generation by an all-dielectric diffractive metasurface embedded in liquid crystals

et al. 2022

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“…Similar to plasmonic counterparts, all‐dielectric anisotropic meta‐atoms composed of high‐refractive index materials can be used to construct compact polarization converters. [ 10 ] In particular, due to the existing multipole Mie resonances that are spectrally overlapped at a single frequency or spectrum range with similar or identical strengths, [ 10,33–35 ] independent and complete phase and polarization control of transmitted fields is possible. Meanwhile, the transmission efficiency can be boosted to a large extent by suppressing the reflection.…”

Section: Metasurface‐based Polarization Convertersmentioning

confidence: 99%

Recent Advances in Polarization‐Encoded Optical Metasurfaces

Ding

Tang

Bozhevolnyi

2021

Advanced Photonics Research

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In recent years, optical metasurfaces, i.e., surface‐confined arrays of engineered nanostructured elements (meta‐atoms), have become an emerging research area due to their unprecedented capabilities of manipulating light with subwavelength spatial resolutions. The metasurfaces revolutionize thereby conventional bulky optics with compact planar elements. As the polarization is one of the intrinsic properties of light and of crucial importance for fundamental sciences and practical applications, the polarization‐encoded functional optical metasurfaces featuring compactness, integration compatibility, and multiple functionalities have been in the focus of intensive research and development. Herein, the basic principles and emerging applications of polarization‐encoded functional metasurfaces operating in the optical range are reviewed. Starting with the description of different polarization states, the review proceeds with considerations of how to interconvert and detect the state of polarization. The main achievements in polarization‐multiplexing metasurface components (metadevices) are then summarized. Finally, a personal outlook on potential directions in this fast‐growing research area is provided in the conclusions.

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“…Computing metasurfaces are two-dimensional artificial nanostructures capable of performing mathematical operations on the input electromagnetic field ( Silva et al., 2014 ; Pors et al., 2015 ; Hwang and Davis, 2016 ; Zhu et al., 2017 ; Lee et al., 2017 ; Zangeneh-Nejad et al., 2020 ; Li et al., 2021 ; Jin et al., 2021 ; Yung et al., 2022 ; He et al., 2022 ; Fu et al., 2022 ). The spatial differentiation operations based on computing metasurfaces have been applied for all-optical image processing, especially for edge detection ( Dong et al., 2018 ; Kwon et al., 2018 ; Zhou et al., 2019 , 2020 , 2021 ; Momeni et al., 2019 ; Huo et al., 2020 ; Liu et al., 2020 ; Wesemann et al., 2021 ; Solntsev et al., 2021 ; Yang et al., 2021 ). In recent years, because of the sensitivity to changes in physical parameters of the system, weak-value amplification techniques have been proposed for the chiral sensing ( Rhee et al., 2013 ; Wang et al., 2020 ).…”

Section: Introductionmentioning

confidence: 99%