Open AccessPerfectly matched layers for nonlocal media with hydrodynamic-Drude description: a transformation optics approach
Author(s) -
Pu Zhang,
Xuejiang Xie,
Xue-Wen Chen
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.024183
Subject(s) - transformation optics , physics , drude model , transformation (genetics) , optics , invariant (physics) , physical optics , plasmon , geometrical optics , classical mechanics , metamaterial , quantum mechanics , biochemistry , chemistry , gene
We develop a transformation optics theory for the nonlocal media in the hydrodynamic Drude model by generalizing the free-electron current density equation to a transformation invariant form. Applying the transformation optics theory, perfectly matched layers (PMLs) for the nonlocal media are theoretically formulated and implemented in frequency domain with finite element method. The nonlocal PMLs are shown to absorb outgoing surface and volume plasmons without inducing unphysical reflections. The effectiveness of the nonlocal PMLs is quantitatively demonstrated by the behaviors that the numerical errors continuously approach zero with increasing linear mesh density.