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

Abstract

Recent experiments have shown that spatial dispersion may have a conspicuous impact on the response of plasmonic structures. This suggests that in some cases the Drude model should be replaced by more advanced descriptions that take spatial dispersion into account, like the hydrodynamic model. Here we show that nonlocality in the metallic response affects surface plasmons propagating at the interface between a metal and a dielectric with high permittivity. As a direct consequence, any nanoparticle with a radius larger than 20 nm can be expected to be sensitive to spatial dispersion whatever its size. The same behavior is expected for a simple metallic grating allowing the excitation of surface plasmons, just as in Wood's famous experiments. Importantly, our work suggests that for any plasmonic structure in a high permittivity dielectric, nonlocality should be taken into account.

References in corpus (21)

• Generalized nonlocal optical response in nanoplasmonics
• Materials Pushing the Application Limits of Wire Grid Polarizers further into the Deep Ultraviolet Spectral Range
• Nonlocal optical response in metallic nanostructures
• Resonance shifts and spill-out effects in self-consistent hydrodynamic nanoplasmonics
• Unusual resonances in nanoplasmonic structures due to nonlocal response
• Modified field enhancement in plasmonic nanowire dimers due to nonlocal response
• Second and Third Harmonic Generation in Metal-Based Nanostructures
• Blueshift of the surface plasmon resonance in silver nanoparticles studied with EELS
• Effects of spatial dispersion in near-field radiative heat transfer between two parallel metallic surfaces
• Multipole plasmons and their disappearance in few-nanometer silver nanoparticles
• Quantum Hydrodynamic Theory for Plasmonics: Impact of the Electron Density Tail
• Nanogap-Enhanced Infrared Spectroscopy with Template-Stripped Wafer-Scale Arrays of Buried Plasmonic Cavities
• The impact of nonlocal response on metallo-dielectric multilayers and optical patch antennas
• Nonlocal response in thin-film waveguides: loss versus nonlocality and breaking of complementarity
• Numerical solution of nonlocal hydrodynamic Drude model for arbitrary shaped nano-plasmonic structures using Nédélec finite elements
• Edge-emitting polariton laser and amplifier based on a ZnO waveguide
• Nonlocal response in plasmonic waveguiding with extreme light confinement
• Size-dependent nonlocal effects in plasmonic semiconductor particles
• Influence of spatial dispersion in metals on the optical response of deeply subwavelength slit arrays
• Plasmonic enhancement of spatial dispersion effects in prism coupler experiments
• Fresnel coefficients and Fabry-Perot formula for spatially dispersive metallic layers

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• Large and Versatile Plasmonic Enhancement of Photoluminescence Using Colloidal Metallic Nanocubes