Spectral engineering through the hybridization of Mie-scatterers and quasi-guided mode resonance: application toward gradient structural colors

Jaehyuck Jang; Trevon Badloe; Younghwan Yang; Jungho Mun; Junsuk Rho

doi:10.1117/12.2582636

5 March 2021 Spectral engineering through the hybridization of Mie-scatterers and quasi-guided mode resonance: application toward gradient structural colors

Jaehyuck Jang, Trevon Badloe, Younghwan Yang, Jungho Mun, Junsuk Rho

Author Affiliations +

Proceedings Volume 11695, High Contrast Metastructures X; 1169519 (2021) https://doi.org/10.1117/12.2582636
Event: SPIE OPTO, 2021, Online Only

Abstract

Mie scatterer resonantly scatters when wavelength of incident light is similar to the size of the scatterer. The scattering of Mie resonator can be analyzed using multipole decomposition; silicon nanostructure has multipole scattering modes in visible regime. When the Mie scatterers are arrayed, the scattering response can be greatly amplified. To properly design array of Mie scatterer, i.e. metasurface, the hybridization of radiation mode of scatterer and lattice effect, i.e. guided-mode resonance (GMR), must be understood. Herein, we would like to provide the scattering mechanisms behind the hybridization between individual scattering mode and lattice effect, and use them to realize gradient structural coloration by silicon-based metasurface. We believe that a solid understanding of the coupling between individual Mie resonators and the lattice resonances can be a strong basis for designing planar spectral filters.

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Jaehyuck Jang, Trevon Badloe, Younghwan Yang, Jungho Mun, and Junsuk Rho "Spectral engineering through the hybridization of Mie-scatterers and quasi-guided mode resonance: application toward gradient structural colors", Proc. SPIE 11695, High Contrast Metastructures X, 1169519 (5 March 2021); https://doi.org/10.1117/12.2582636

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KEYWORDS

Silicon

Mie scattering

Scattering

Light scattering

Resonators

Refractive index

Solids

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