Amplification of evanescent waves in a lossy left-handed material slab

2003/04/30 by X. S. Rao, C. K. Ong · 2 citations
Engineering · Materials Science · Physics and Astronomy · #Metamaterials and Metasurfaces Applications #Photonic Crystals and Applications #Plasmonic and Surface Plasmon Research #cond-mat.mtrl-sci

paper · pdf · doi:10.1103/physrevb.68.113103

published as Physical Review B 68, 113103 (2003) · 4 pages, 2 figures

arxiv created 2003/06/16 · openalex publication_date 2003/09/16 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We carry out finite-difference time-domain simulations, with a specially designed boundary condition, on pure evanescent waves interacting with a lossy left-handed material (LHM) slab. Our results provide the full-wave numerical evidence for the amplification of evanescent waves inside a LHM slab of finite absorption. The amplification is due to the interactions between the evanescent waves and the coupled surface polaritons at the two surfaces of the LHM slab and the physical process can be described by a simple model.

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• Subwavelength imaging by a left-handed material superlens
• Surface polaritons of a left-handed curved slab

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