Nanoparticle-based metasurfaces for angular independent spectral filtering applications

Francesco Lotti; Ali Mirzaei; Andrey E. Miroschnichenko; Anatoly Zayats

doi:10.1063/1.5108578

Nanoparticle-based metasurfaces for angular independent spectral filtering applications

Francesco Lotti, Ali Mirzaei, Andrey E. Miroschnichenko, Anatoly Zayats

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

We designed a metasurface made of a monolayer of spherical nanoparticles embedded in a dielectric slab, which exhibits transmission prop-
erties independent of the incidence angle. Adjusting the electromagnetic coupling between high-index dielectric and hybrid core-shell nano-
particles enables the metasurface to operate in low-pass, bandpass, as well as band-stop regimes in the visible and near-infrared spectral
ranges. We demonstrate how symmetric properties of spherical nanoparticles determine the response of the metasurface, resulting in a spec-
tral filter with a wide angular acceptance range. We study transmission characteristics of the metasurface, such as frequency selectivity, the
slope of filtering at cutoff frequencies, and the robustness of the metasurface against experimental variations in geometrical parameters. Our
analyses show that the proposed approach can be used to design angular-independent spectral filters with the same material platform and
approach to operate in different regimes and spectral ranges.

Original language	English
Article number	213101
Pages (from-to)	213101-1
Number of pages	213101
Journal	Journal of Applied Physics
Volume	126
Issue number	21
DOIs	https://doi.org/10.1063/1.5108578
Publication status	Published - 7 Dec 2019

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AU - Lotti, Francesco

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Nanoparticle-based metasurfaces for angular independent spectral filtering applications

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