Design of metallic nanoparticle gratings for filtering properties in the visible spectrum

Plasmonic resonances in metallic nanoparticles are exploited to create efficient optical filtering functions. A finite element method is used to model metallic nanoparticle gratings. The accuracy of this method is shown by comparing numerical results with measurements on a two-dimensional grating of...

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Veröffentlicht in:Applied Optics 2015-12, Vol.54 (35), p.10359-10368
Hauptverfasser: Brûlé, Y, Demésy, G, Fehrembach, A-L, Gralak, B, Popov, E, Tayeb, G, Grangier, M, Barat, D, Bertin, H, Gogol, P, Dagens, B
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Sprache:eng
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Zusammenfassung:Plasmonic resonances in metallic nanoparticles are exploited to create efficient optical filtering functions. A finite element method is used to model metallic nanoparticle gratings. The accuracy of this method is shown by comparing numerical results with measurements on a two-dimensional grating of gold nanocylinders with an elliptic cross section. A parametric analysis is then performed in order to design efficient filters with polarization dependent properties together with high transparency over the visible range. The behavior of nanoparticle gratings is also modeled using the Maxwell-Garnett homogenization theory and analyzed by comparison with the diffraction of a single nanoparticle. The proposed structures are intended to be included in optical systems that could find innovative applications.
ISSN:0003-6935
2155-3165
1539-4522
DOI:10.1364/AO.54.010359