Phys. Rev. Lett. 95, 137404 (2005) [4 pages]Experimental Demonstration of Near-Infrared Negative-Index MetamaterialsReceived 7 March 2005; published 23 September 2005 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 frequencies due to difficulties of fabrication and to the generally poor optical properties of metals at these wavelengths. In this Letter, we report the first fabrication and experimental verification of a transversely structured metal-dielectric-metal multilayer exhibiting a negative refractive index around 2 μm. 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. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.137404
DOI:
10.1103/PhysRevLett.95.137404
PACS:
78.20.Ci, 42.25.Bs, 42.79.Dj
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