Open AccessArtificial metal with effective plasma frequency in near-infrared region
Author(s) -
Xingzhan Wei,
Haofei Shi,
Qiling Deng,
Xiaochun Dong,
Chunheng Liu,
Yang Lu,
Chunlei Du
Publication year - 2010
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.18.003370
Subject(s) - finite difference time domain method , optics , infrared , plasma , materials science , electromagnetic radiation , dielectric , skin effect , rod , metal , plasma oscillation , optoelectronics , physics , medicine , alternative medicine , pathology , quantum mechanics , metallurgy
We have proposed and demonstrated an artificial medium consisting of arrays of circular metal rods embedded in a dielectric host, which holds a real metal behavior but the extracted effective plasma frequency is in near-infrared region. The electromagnetic responses of such medium and the retrieved effective material parameters have been particularly shown. In addition, an analytic model about effective plasma frequency is constructed by uniquely considering the skin effect and introducing the parameter-skin depth, whose predicting results are in well accordance with the FDTD simulation. This artificial material may open possibilities for many metal-based applications in near-infrared regime.