Abstract
We discuss the well-known limitations in the retrieval of homogenized constitutive parameters based on reflection and transmission from metamaterial slabs arising near the Fabry-Perot resonances of the samples under analysis. The associated artifacts can significantly affect the retrieval results, causing Lorentzian-like nonphysical features. We discuss the nature of these artifacts and propose a general method to correct them based on a numerical regression procedure. These concepts are applied to a homogeneous slab and a periodic metamaterial array, showing that the proposed correction can provide an improved retrieval technique for metamaterial homogenization purposes.
Original language | English |
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Article number | 235106 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 84 |
Issue number | 23 |
DOIs | |
Publication status | Published - 1 Dec 2011 |