Modal analysis of electromagnetic resonators: User guide for the MAN program

Wu, Tong; Arrivault, Denis; Yan, Wei; Lalanne, Philippe

doi:10.1016/j.cpc.2022.108627

Cited by 11 publications

(15 citation statements)

References 39 publications

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“…The insets display a few QNM radiation diagrams computed at the real QNM resonant frequencies for normalized QNMs. The QNMs are computed and normalized with the PML-normalization method using the QNMEig solver 46 of the MAN (modal analysis of nanoresonators) freeware package 47 based on COMSOL Multiphysics; see Methods. Two types of resonances with contrasted behaviors are found.…”

Section: Resultsmentioning

confidence: 99%

“…The maps show the real part of the QNM electric field x -component, Ẽ x , in the xz-plane. The fields are computed and normalized with the freeware MAN . (d) Scattering diagrams of the normalized dipolar and quadrupolar QNMs for h = ∞.…”

Section: Resultsmentioning

confidence: 99%

“…Encouraged by the agreement, we further study how the most relevant QNMs contribute to the scattering cross-sectional map. Figure b displays a series of reconstructions of the cross-sectional maps obtained by progressively increasing the number of QNMs retained in the expansion of the scattered field. , Additionally, for the sake of clarity, the QNM eigenfrequencies are highlighted with dashed-white vertical lines and black arrows. Only the EQ QNM is considered for the upper map; we indeed obtain an intense violet peak at 2π c /Re(ω ̃ EQ ) = 433 nm.…”

Section: Resultsmentioning

confidence: 99%

“…To compute the resonances of the Ag nanocubes, we used the QNMEig solver 46 of the freeware MAN (modal analysis of nanoresonators). 47 The computation precisely considered the spectral dispersion of silver with a bipole Drude model and silicon with four pairs of Lorentz poles. 58 The refractive index of the silica layer is assumed to be equal to 1.47.…”

Section: Methodsmentioning

confidence: 99%

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Tailoring Iridescent Visual Appearance with Disordered Resonant Metasurfaces

Agreda

Hereu

et al. 2023

ACS Nano

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The nanostructures of natural species offer beautiful visual appearances with saturated and iridescent colors, and the question arises whether we can reproduce or even create unique appearances with man-made metasurfaces. However, harnessing the specular and diffuse light scattered by disordered metasurfaces to create attractive and prescribed visual effects is currently inaccessible. Here, we present an interpretive, intuitive, and accurate modal-based tool that unveils the main physical mechanisms and features defining the appearance of colloidal disordered monolayers of resonant meta-atoms deposited on a reflective substrate. The model shows that the combination of plasmonic and Fabry–Perot resonances offers uncommon iridescent visual appearances, differing from those classically observed with natural nanostructures or thin-film interferences. We highlight an unusual visual effect exhibiting only two distinct colors and theoretically investigate its origin. The approach can be useful in the design of visual appearance with easy-to-make and universal building blocks having a large resilience to fabrication imperfections and potential for innovative coatings and fine-art applications.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Tailoring Iridescent Visual Appearance with Disordered Resonant Metasurfaces

Agreda

Hereu

et al. 2023

ACS Nano

Self Cite

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“…The approach is based on the theory of the RP method and on using the field distributions of QNMs. It does not require contour integration and can be easily integrated in existing QNM frameworks such as the RPExpand [ 27 ] or the MAN [ 37 ] programs. For accurate results, the background contributions can be accounted for by interpolation relying either on a contour integral or scattering simulations at real frequencies.…”

Section: Discussionmentioning

confidence: 99%

Resonance Expansion of Quadratic Quantities with Regularized Quasinormal Modes

Betz

Binkowski

Hammerschmidt

et al. 2023

Physica Status Solidi (a)

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Resonance expansions are an intuitive approach to capture the interaction of an optical resonator with light. Herein, a quasinormal mode expansion approach for quadratic observables is presented. The approach exploits the rigorous Riesz projection method. A numerical implementation of a state‐of‐the‐art quantum light source demonstrates the applicability with emphasis on modal expansions outside the underlying nanophotonic resonator.

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Theoretical background

Valero,

Shalin

2024

All-Dielectric Nanophotonics

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Modal analysis of electromagnetic resonators: User guide for the MAN program

Cited by 11 publications

References 39 publications

Tailoring Iridescent Visual Appearance with Disordered Resonant Metasurfaces

Tailoring Iridescent Visual Appearance with Disordered Resonant Metasurfaces

Resonance Expansion of Quadratic Quantities with Regularized Quasinormal Modes

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