Optical properties of nanoscale annular array metamaterials
SM Orbons, D Freeman, BC Gibson, ST Huntington, B Luther-Davies, DN Jamieson, A Roberts, MI Stockman (ed.)
PLASMONICS: METALLIC NANOSTRUCTURES AND THEIR OPTICAL PROPERTIES IV | SPIE-INT SOC OPTICAL ENGINEERING | Published : 2006
The near and far-field transmission characteristics of nanoscale annular array metamaterials fabricated using ion beam lithography are investigated both computationally and experimentally. Experimental results in the far-field regime demonstrate high transmission efficiencies in the near infra-red region of the electromagnetic spectrum for these devices, in excellent qualitative agreement with a previously developed numerical model. The diffractive near-field behavior of such structures is discussed, with a particular emphasis on the implications associated with verifying such predictions experimentally.