Enhanced Second-Harmonic Generation Using Broken Symmetry   III–V Semiconductor Fano Metasurfaces

Vabishchevich, Polina P.; Liu, Sheng; Sinclair, Michael B.; Keeler, Gordon Arthur; Peake, Gregory M.; Brener, Igal

doi:10.1021/acsphotonics.7b01478

Cited by 243 publications

(184 citation statements)

References 25 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%

“…Recently, the resonant response of a wide class of asymmetric metasurfaces consisting of unit cells with broken in-plane inversion symmetry was shown to demonstrate narrow features with the Fano shape in the normal incidence reflection and transmission spectra. Such sharp resonances were treated as high-Q states and used for various applications, including the efficient imaging-based molecular barcoding [141] and enhanced nonlinear response [144]. In a very recent paper it was proven than all observed high-Q resonances in such seemingly different metasurfaces with broken-symmetry meta-atoms can be unified by the BIC concept [78].…”

Section: Metamaterials and Metasurfacesmentioning

confidence: 99%

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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%

Section: Metamaterials and Metasurfacesmentioning

confidence: 99%

Nonradiating photonics with resonant dielectric nanostructures

et al. 2019

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“…Top: Schematic of light scattering by a metasurface. Bottom: Designs of unit cells of metasurfaces with a broken in-plane inversion symmetry of constituting meta-atoms supporting sharp resonances, analysed in Refs [4][5][6][7][8][9][10][11][12][13]…”

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confidence: 99%

Asymmetric Metasurfaces with High- Q Resonances Governed by Bound States in the Continuum

et al. 2018

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We reveal that metasurfaces created by seemingly different lattices of (dielectric or metallic) meta-atoms with broken in-plane symmetry can support sharp high-Q resonances that originate from the physics of bound states in the continuum. We prove rigorously a direct link between the bound states in the continuum and the Fano resonances, and develop a general theory of such metasurfaces, suggesting the way for smart engineering of resonances for many applications in nanophotonics and meta-optics.Metasurfaces have attracted a lot of attention in the recent years due to novel ways for wavefront control, advanced light focusing, and ultra-thin optical elements [1]. Recently, metasurfaces based on high-index resonant dielectric materials [2] have emerged as essential building blocks for various functional meta-optics devices [3] due to their low intrinsic loss, with unique capabilities for controlling the propagation and localization of light. A key concept underlying the specific functionalities of many metasurfaces is the use of constituent elements with spatially varying optical properties and optical response characterized by high quality factors (Q factors) of the resonances.Many interesting phenomena have been shown for metasurfaces composed of arrays of meta-atoms with broken inplane inversion symmetry (see Fig. 1), which all demonstrate the excitation of high-Q resonances for the normal incidence of light. The examples are the demonstration of imagingbased molecular barcoding with pixelated dielectric metasurfaces [4] and manifestation of polarization-induced chirality in metamaterials [5], which both are composed of asymmetric pairs of tilted bars [see Fig. 1(a)], observation of trapped modes in arrays of dielectric nanodisks with asymmetric holes [6] [see Fig. 1(b)], sharp trapped-mode resonances in plasmonic and dielectric split-ring structures [7,8] [see, e.g., Fig. 1(c)], broken-symmetry Fano metasurfaces for enhanced nonlinear effects [9, 10] [see Fig. 1(d)], tunable high-Q Fano resonances in plasmonic metasurfaces [11] [see Fig. 1(e)], trapped light and metamaterial-induced transparency in arrays of square split-ring resonators [12,13] presented in Fig. 1(f). Here, we demonstrate that all such seemingly different structures can be unified by a general concept of bound states in the continuum, and we prove rigorously their link to the Fano resonances.Bound states in the continuum (BICs) originated from quantum mechanics as a curiosity [14], but later they were rediscovered as an important physical concept of destructive interference [15] being then extended to other fields of wave physics, including acoustics [16] and optics [17,18]. A true BIC is a mathematical object with an infinite Q factor and vanishing resonance width, it can exist only in ideal lossless infinite structures or for extreme values of parameters [19][20][21]. In practice, BIC can be realized as a quasi-BIC in the form of a supercavity mode [22] when both Q factor and resonance width become finite at the BIC conditions due to ab-d c a...

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“…Alldielectric nanostructures are free from high ohmic losses, and offer wide variety of dielectric and semiconductor materials including those with nonzero bulk second order susceptibility tensor. Excitation of Mie resonances in such nanoparticles provides novel opportunities for nonlinear optics [7,8], and allows one to achieve record-high nonlinear conversion efficiencies at the nanoscale [9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Second-harmonic generation in Mie-resonant dielectric nanoparticles made of noncentrosymmetric materials

et al. 2019

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We develop a multipolar theory of second-harmonic generation (SHG) by dielectric nanoparticles made of noncentrosymmetric materials with bulk quadratic nonlinearity. We specifically analyze two regimes of optical excitation: illumination by a plane wave and single-mode excitation, when the laser pump drives the magnetic dipole mode only. Considering two classes of nonlinear crystalline solids (dielectric perovskite material and III-V semiconductor), we apply a symmetry approach to derive selection rules for the multipolar composition of the nonlinear radiation. The developed description can be used for design of efficient nonlinear optical nanoantennas with reconfigurable radiation characteristics.

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Enhanced Second-Harmonic Generation Using Broken Symmetry III–V Semiconductor Fano Metasurfaces

Cited by 243 publications

References 25 publications

Nonradiating photonics with resonant dielectric nanostructures

Nonradiating photonics with resonant dielectric nanostructures

Asymmetric Metasurfaces with High- Q Resonances Governed by Bound States in the Continuum

Second-harmonic generation in Mie-resonant dielectric nanoparticles made of noncentrosymmetric materials

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