Artificial metal with effective plasma frequency in near-infrared region.
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.
Wei
Xingzhan
X
State Key Laboratory of Optical Technologies for Microfabrication, Institute of Optics and Electronics, Chinese Academy of Sciences, P. O. Box 350, Chengdu 610209, China.
Shi
Haofei
H
Deng
Qiling
Q
Dong
Xiaochun
X
Liu
Chunheng
C
Lu
Yueguang
Y
Du
Chunlei
C
D003198:Computer Simulation; D004574:Electromagnetic Fields; D005740:Gases / Q000737:chemistry*; D006358:Hot Temperature; D007259:Infrared Rays; D008670:Metals; D008956:Models, Chemical; D012031:Refractometry / Q000379:methods*
D005740:Gases; D008670:Metals