Correcting the Fabry-Perot artifacts in metamaterial retrieval procedures

Xing Xiang Liu*, David A. Powell, Andrea Alù

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    34 Citations (Scopus)

    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 languageEnglish
    Article number235106
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume84
    Issue number23
    DOIs
    Publication statusPublished - 1 Dec 2011

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