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Influence of spatial dispersion on surface plasmons, nanoparticles and grating couplers

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Academic year: 2021

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FIG. 1. Surface plasmon dispersion curves (see relation (3)) along a single dielectric − Ag interface, assuming material pa-rameters for silver[42]
FIG. 2. Local (blue) and nonlocal (orange) absorption for a cylinder cross-section of radius (from left to right) R = 10, 50, 100 nm as a function of the impinging wavelength λ using (a) : water or (b) : TiO 2 as dielectric
FIG. 3. (a): Schematic representation of a grating coupler. 1 (b): Schematic representation of a SP propagating along a dielectric − metal interface, taking the finite height of the dielectric into account
FIG. 5. (a): Reflectivity of the grating illuminated in nor- nor-mal incidence for different values of h G computed using a local RCWA for λ ∈ [480, 850] nm
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