Demonstration of Near-Infrared Negative-Index Materials
arXiv:physics/0504208 · doi:10.1103/PhysRevLett.95.137404
Abstract
Metal-based negative refractive index materials have been extensively studied in the microwave region. However, negative-index metamaterials have not been realized at near-IR or visible fre-quencies due to difficulties of fabrication and to the generally poorer optical properties of metals at these wavelengths. In this paper, we report the first fabrication and experimental verification of a transversely structured metal-dielectric-metal multilayer exhibiting a negative refractive in-dex around 2 mm. Both the amplitude and the phase of the transmission and reflection were measured experimentally, and are in good agreement with a rigorous coupled wave analysis.
16 pages, 5 figures, submitted to Physical Review Letters on March 07, 2005