NanoElectromagnetic Metamaterials Approaching Telecommunications Frequencies

Abstract

Arrays of gold Rod-Split-Ring-Resonators with structural details down to sub 100 nm, and exhibiting electromagnetic metamaterial (EM3) behavior near telecommunications frequencies, have been produced by nanofabrication. Samples were characterized at the Singapore Synchrotron Light Source ISMI (Infrared Spectro/MIcroscopy) facility using Bruker Optics’ IFS 66v/S Fourier transform interferometer and Hyperion 2000 Microscope powered by synchrotron radiation. Oblique incidence transmission spectra were measured and revealed a spectral resonance around 190 THz. The present work extends the frequency range in which EM3are available, thereby opening up opportunities for new applications in the telecommunications frequency regime.