Light scattering by correlated disordered assemblies of nanoantennas

Shamy, Eslam El; Jaeck, Julien; Haïdar, Riad; Bouchon, Patrick

doi:10.1063/1.5097461

Cited by 7 publications

(3 citation statements)

References 33 publications

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“…These studies on groove resonators have been done with periodic boundary conditions, while other studies have introduced shape or position disorder in the case of other plasmonic resonators [10][11][12][13][14][15][16]. Considering the influence of disorder on resonators is of interest for several reasons.…”

Section: Introductionmentioning

confidence: 99%

Study of disordered metallic groove arrays with a one-mode analytical model

Denis¹,

Shamy²,

Jaeck³

et al. 2020

Opt. Express

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Sub-wavelength metallic grooves behave as Fabry-Perot nanocavities able to resonantly enhance the absorption of light as well as the intensity of the electromagnetic field. Here, with a one-mode analytical model, we investigate the effect of a correlated disorder on 1D groove arrays i.e., randomly shaped and positioned grooves on a metallic layer. We show that a jitter-based disorder leads to a redistribution of energy compared to the periodic case. In an extreme case, a periodic diffracting array can be converted into a highly scattering array (98% at λ = 2.8 µm with a 1 µm full width at half maximum). Eventually, we show that the optical response of combinations of variously shaped grooves can be well described by the individual subset behaviors.

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Section: Introductionmentioning

confidence: 99%

Study of disordered metallic groove arrays with a one-mode analytical model

Denis¹,

Shamy²,

Jaeck³

et al. 2020

Opt. Express

Self Cite

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“…While the emergence of structural disorder is usually thought as being an unavoidable downside of these fabrication methods, some photonic-based applications actually benefit from it . Indeed positional disorder helps to tune − or reduce the diffraction, scattering, − reflection, , or radiation , of metasurfaces, with potential applications in the fabrication of better displays . Disorder can also suppress grating effects, make surface-enhanced Raman scattering broadband, enhance localized photoluminescence, improve wavefront shaping, , and increase light absorption, , e.g., for solar cells or light extraction. , For example, coating the air–LED interface with disordered nanostructures provides a broadband coupling between what would have been internally trapped photons to the external radiation, making more energy efficient LEDs .…”

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confidence: 99%

Topological Learning for the Classification of Disorder: An Application to the Design of Metasurfaces

Madeleine,

Podoliak,

Buchnev

et al. 2023

ACS Nano

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Structural disorder can improve the optical properties of metasurfaces, whether it is emerging from some large-scale fabrication methods or explicitly designed and built lithographically. For example, correlated disorder, induced by a minimum inter-nanostructure distance or by hyperuniformity properties, is particularly beneficial for light extraction. Inspired by topology, we introduce numerical descriptors to provide quantitative measures of disorder with universal properties, suitable to treat both uncorrelated and correlated disorder at all length scales. The accuracy of these topological descriptors is illustrated both theoretically and experimentally by using them to design plasmonic metasurfaces with controlled disorder that we then correlate to the strength of their surface lattice resonances. These descriptors are an example of topological tools that can be used for the fast and accurate design of disordered structures or as aid in improving their fabrication methods.

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“…There is a collective effort to understand how the interplay between order and disorder leads to new or improved optical functionalities. 14,21,[29][30][31][32][33][34][35][36][37] These applications require particles with well-defined characteristics that can be assembled into large area surfaces. Advances in colloidal chemistry in the past decades have enabled the synthesis of a wide range of nano-objects with various shapes, sizes and compositions, and that can strongly interact with light, despite their small size.…”

mentioning

confidence: 99%