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Planewave diffraction at the periodically corrugated boundary of vacuum and a negative phase-velocity material

R. A. Depine·A. Lakhtakia
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Abstract

Considering the diffraction of a plane wave by a periodically corrugated half-space, we show that the transformation of the refracting medium from positive/negative phase-velocity to negative/positive phase-velocity type has an influence on the diffraction efficiencies. This effect increases with increasing corrugation depth, owing to the presence of evanescent waves in the troughs of the corrugated interface.

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R. A. Depine, A. Lakhtakia. 2004-02-19. Planewave diffraction at the periodically corrugated boundary of vacuum and a negative phase-velocity material. https://doi.org/10.1103/physreve.69.057602

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