Diffractive interface theory: nonlocal susceptibility approach to the optics of metasurfaces.

@article{Roberts2015DiffractiveIT,
  title={Diffractive interface theory: nonlocal susceptibility approach to the optics of metasurfaces.},
  author={C. M. Roberts and Sandeep Inampudi and Viktor Podolskiy},
  journal={Optics express},
  year={2015},
  volume={23 3},
  pages={
          2764-76
        }
}
We present a formalism for understanding the electromagnetism of metasurfaces, optically thin composite films with engineered diffraction. The technique, diffractive interface theory (DIT), takes explicit advantage of the small optical thickness of a metasurface, eliminating the need for solving for light propagation inside the film and providing a direct link between the spatial profile of a metasurface and its diffractive properties. Predictions of DIT are compared with full-wave numerical… CONTINUE READING

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