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arXiv · 1905.05641

Direct retrieval method of the effective permittivity and permeability of bulk semi-infinite metamaterials by variable-angle spectroscopic ellipsometry

Quentin Flamant·Daniel Torrent·Sergio Gomez-Graña·Alexander N. Grigorenko·Vasyl G. Kravets·Philippe Barois·Virginie Ponsinet·Alexandre Baron
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Abstract

In this work, we present a simple method for the direct retrieval of the effective permittivity and permeability of a bulk semi-infinite metamaterial from variable-angle spectroscopic ellipsometry measurements. Starting from the well-known Fresnel equations, we derive an analytical expression in which unknown coefficients are fitted to the experimental data using a linear regression model. The effective permittivity and permeability are then determined by solving a simple system and the correct solution is selected based on physical criteria. As an example, the method is applied to the case of a self-assembled metamaterial exhibiting strong isotropic optical magnetism.

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Quentin Flamant, Daniel Torrent, Sergio Gomez-Graña, Alexander N. Grigorenko, Vasyl G. Kravets, Philippe Barois, Virginie Ponsinet, Alexandre Baron. 2019-05-14. Direct retrieval method of the effective permittivity and permeability of bulk semi-infinite metamaterials by variable-angle spectroscopic ellipsometry. https://doi.org/10.1364/osac.2.001762

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