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Optimization of an isotropic metasurface on a substrate

Journal: Discrete and Continuous Models and Applied Computational Science (Vol.30, No. 2)

Publication Date:

Authors : ;

Page : 115-126

Keywords : antireflective coating optimization; penalty function method; constrains on geometric parameters; all-dielectric metasurface on a substrate;

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Abstract

Mathematical statement of one-wavelength antireflective coating based on two-dimensional metamaterial is formulated for the first time. The constraints on geometric parameters of the structure are found. We propose a penalty function, which ensures the applicability of physical model and provides the uniqueness of the desired minimum. As an example, we consider the optimization of metasurface composed of PbTe spheres located on germanium substrate. It is shown that the accuracy of the minimization with properly chosen penalty term is the same as for the objective function without it.

Last modified: 2022-05-04 05:38:20