Influence of spatial dispersion in metals on the optical response of deeply subwavelength slit arrays

  title={Influence of spatial dispersion in metals on the optical response of deeply subwavelength slit arrays},
  author={Mathieu Dechaux and P H Tichit and Cristian Cirac{\`i} and Jessica B{\'e}n{\'e}dicto and R'emi Polles and Emmanuel Centeno and David R. Smith and Antoine Moreau},
  journal={Physical Review B},
In the framework of the hydrodynamic model describing the response of electrons in a metal, we show that arrays of very narrow and shallow metallic slits have an optical response that is influenced by the spatial dispersion in metals arising from the repulsive interaction between electrons. As a simple Fabry-Perot model is not accurate enough to describe the structure's behavior, we propose to consider the slits as generalized cavities with two modes, one being propagative and the other… 

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