Direct retrieval method of the effective permittivity and permeability of bulk semi-infinite metamaterials by variable-angle spectroscopic ellipsometry
| Autor: | Flamant, Quentin, Torrent, Daniel, Gomez-Graña, Sergio, Grigorenko, Alexander N., Kravets, Vasyl G., Barois, Philippe, Ponsinet, Virginie, Baron, Alexandre |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | OSA Continuum, Vol. 2, Issue 5, pp. 1762-1772 (2019) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1364/OSAC.2.001762 |
| Popis: | 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. Comment: 11 pages, 5 figures |
| Databáze: | arXiv |
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