Negative index of refraction in optical metamaterials.

By Vladimir M. Shalaev, Wenshan Cai, U. Chettiar, Hsiao-Kuan Yuan, A. Sarychev, Vladimir P. Drachev, Alexander V. Kildishev. Optics Letters, 2005

1,528 citations recorded by the source corpus.

A double-periodic array of pairs of parallel gold nanorods is shown to have a negative refractive index in the optical range. Such behavior results from the plasmon resonance in the pairs of nanorods for both the electric and the magnetic components of light. The refractive index is retrieved from direct phase and amplitude measurements for transmission and reflection, which are all in excellent agreement with simulations. Both experiments and simulations demonstrate that a negative refractive index n' approximately -0.3 is achieved at the optical communication wavelength of 1.5 microm using the array of nanorods. The retrieved refractive index critically depends on the phase of the transmitted wave, which emphasizes the importance of phase measurements in finding n'.

Subfields: Aerospace Engineering, Biomedical Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/6797c3c82b0a162998629919bb09a759059621f3

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Citations in the corpus

Recent Progress in Electromagnetic Metamaterial Devices for Terahertz Applications (2011, background): “strated during the last decade, as for example, thin metallic wires [38]–[40], Swiss rolls [41], [42], pairs of rods and crosses [43]–[47], fishnet structures [48]–[52], and SRRs [53]–[57].”
Plasmonics: Fundamentals and Applications (2007, methodology): “5 μm using a metamaterial consisting of rod-shaped gold/insulator/gold sandwich structures [Shalaev et al., 2005].”