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

@article{Pitelet2019InfluenceOS,
  title={Influence of spatial dispersion on surface plasmons, nanoparticles, and grating couplers},
  author={Armel Pitelet and Nikolai Schmitt and Dimitrios Loukrezis and Claire Scheid and Herbert de Gersem and Cristian Cirac{\`i} and Emmanuel Centeno and Antoine Moreau},
  journal={Journal of the Optical Society of America B},
  year={2019}
}
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, such as 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… 
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