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arXiv · 1408.3155

Diffractive Interface Theory: Nonlocal polarizability approach to the optics of metasurfaces

Christopher M. Roberts·Sandeep Inampudi·Viktor A. Podolskiy
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Abstract

We present a formalism for understanding the elecromagnetism 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 solutions of Maxwell's equations, demonstrating DIT's validity and computational advantages for optically thin structures. Applications of the DIT range from understanding of fundamentals of light-matter interaction in metasurfaces to efficient analysis of generalized refraction to metasurface optimization.

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Christopher M. Roberts, Sandeep Inampudi, Viktor A. Podolskiy. 2014-08-13. Diffractive Interface Theory: Nonlocal polarizability approach to the optics of metasurfaces. https://arxiv.org/abs/1408.3155

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