Comparison of Electromagnetically Induced Transparency Performance in Metallic and All-Dielectric Metamaterials

Hu, Jie; Lang, Tingting; Hong, Zhi; Shen, Changyu; Shi, Guohua

doi:10.1109/jlt.2018.2804336

Cited by 70 publications

(27 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We believe that asymmetric metasurfaces based on the BIC concept can describe many other phenomena studies earlier with different applications in mind, for example, the electromagnetically induced transparency [158], sensing [159], and light emission control [160].…”

Section: Metamaterials and Metasurfacesmentioning

confidence: 88%

Nonradiating photonics with resonant dielectric nanostructures

et al. 2019

View full text Add to dashboard Cite

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]

show abstract

Section: Metamaterials and Metasurfacesmentioning

confidence: 88%

Nonradiating photonics with resonant dielectric nanostructures

et al. 2019

View full text Add to dashboard Cite

show abstract

“…We believe our approach based on the BIC concept can describe many other cases of symmetry-broken metasurfaces and also photonic crystral slabs, studied earlier with different applications in mind [41][42][43][44][45]. Also, our approach can be helpful to get a deeper physical insight into many other problems in optics, including dark bound states in dielectric inclusions coupled to the external waves by small non-resonant metallic antennas [46] and electromagnetically induced transparency [47]. We argue that almost any problem involving the so-called "dark states" can find its rigorous formulation with the powerful theory of BIC resonances.…”

mentioning

confidence: 88%

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

et al. 2018

View full text Add to dashboard Cite

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...

show abstract

“…A linear fit between the wavelength shift of the transmission peak and the external refractive index is shown in Figure 6b, and the slope of the linear fit gives a sensitivity S of 203 nm/RIU. The corresponding FOM is 29 and is higher than Fano-resonant plasmonic sensors in the previous work [40][41][42].…”

Section: Resultsmentioning

confidence: 57%

Electromagnetically Induced Transparency in All-Dielectric U-Shaped Silicon Metamaterials

et al. 2018

View full text Add to dashboard Cite

An analogy of electromagnetically induced transparency (EIT) based on all-dielectric metamaterial is theoretically demonstrated in this paper. The U-shaped Silicon-based metamaterial unit cell comprises a dipole antenna supported by one horizontal nanoscale bar and a quadrupolar antenna supported by two vertical nanoscale bars. The near-field coupling between the two antennas and the reduction of absorption loss lead to a narrow EIT-like transmission window with a high quality-factor of 130, which exhibits a refractive index sensitivity with a figure-of-merit of 29. The group delay of 0.75 ps and the group index of 2035 are obtained in the transmission window. Due to these unique optical properties, the proposed metamaterial structure can find many applications including slow-light devices, optical sensors, enhancement of non-linear processes, and storage of quantum information.

show abstract

Comparison of Electromagnetically Induced Transparency Performance in Metallic and All-Dielectric Metamaterials

Cited by 70 publications

References 63 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

Electromagnetically Induced Transparency in All-Dielectric U-Shaped Silicon Metamaterials

Contact Info

Product

Resources

About