Optical response induced by bound states in the continuum in arrays of dielectric spheres

Bulgakov, Evgeny N.; Максимов, Дмитрий Н.

doi:10.1364/josab.35.002443

Cited by 35 publications

(37 citation statements)

References 48 publications

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“…Such type of chains were analyzed theoretically in details in Refs. [35,67,73,122,[153][154][155][156][157]. In particular, A. Sadreev and co-workers proposed a novel type of the waveguide consisting of a circular array of parallel dielectric wires providing optical signals above the light line of the surrounding space without raidiation losses (Fig.…”

Section: Metamaterials and Metasurfacesmentioning

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: Metamaterials and Metasurfacesmentioning

confidence: 99%

Nonradiating photonics with resonant dielectric nanostructures

et al. 2019

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“…Recently, great attention has been focused on a novel family of nonradiating resonant states that can be supported in engineered alldielectric metasurfaces and termed bound states in the continuum (BICs) [6][7][8][9][10][11][12][13][14]. BIC existence is an intriguing phenomenon firstly proved in quantum mechanics and then extensively studied in electronic and photonic structures [15][16][17][18][19]. These special modes possess an ideal infinite Q-factor characterized by vanishing resonance linewidth since can be completely decoupled from the continuum of propagating free-space radiation [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Tuning the exponential sensitivity of a bound-state-in-continuum optical sensor

Romano¹,

Zito²,

Yépez³

et al. 2019

Opt. Express

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In this work, we investigate the evanescent field sensing mechanism provided by an all-dielectric metasurface supporting bound states in the continuum (BICs). The metasurface is based on a transparent photonic crystal with subwavelength thickness. The BIC electromagnetic field is localized along the direction normal to the photonic crystal nanoscale-thin slab (PhCS) because of a topology-induced confinement, exponentially decaying in the material to detect. On the other hand, it is totally delocalized in the PhCS plane, which favors versatile and multiplexing sensing schemes. Liquids with different refractive indices, ranging from 1.33 to 1.45, are infiltrated in a microfluidic chamber bonded to the sensing dielectric metasurface. We observe an experimental exponential sensitivity leading to differential values as large as 226 nm/RIU with excellent FOM. This behavior is explained in terms of the physical superposition of the field with the material under investigation and supported by a thorough numerical analysis. The mechanism is then translated to the case of molecular adsorption where a suitable theoretical engineering of the optical structure points out potential sensitivities as large as 4000 nm/RIU.

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“…The only d Λ = 1, d = 3 problems of which we are aware are computations of eigenmodes for twisted waveguides on the basis of either approximate models [41] or finite-difference methods in time-domain (FDTD) [53]. The contributions [11,29,46,51] consider linear arrays of spheres but they also focus on the study of guided modes in the periodic structure rather than the simulation of a wave-scattering process. To the best of our knowledge, the numerical simulations presented in what follows are the first high-order accurate numerical simulations ever produced for linear arrays in three-dimensional space.…”

Section: Linear Periodic Arrays In Three Dimensional Spacementioning

confidence: 99%

On the evaluation of quasi-periodic Green functions and wave-scattering at and around Rayleigh-Wood anomalies

Bruno

Fernandez-Lado

2020

Journal of Computational Physics

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Optical response induced by bound states in the continuum in arrays of dielectric spheres

Cited by 35 publications

References 48 publications

Nonradiating photonics with resonant dielectric nanostructures

Nonradiating photonics with resonant dielectric nanostructures

Tuning the exponential sensitivity of a bound-state-in-continuum optical sensor

On the evaluation of quasi-periodic Green functions and wave-scattering at and around Rayleigh-Wood anomalies

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