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Publication Citation: All-angle negative refraction and active flat lensing of ultraviolet light

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Author(s): Ting Xu; Amit K. Agrawal; Maxim Abashin; Kenneth J. Chau; Henri J. Lezec;
Title: All-angle negative refraction and active flat lensing of ultraviolet light
Published: May 22, 2013
Abstract: The ability of a left-handed medium to sustain backwards electromagnetic waves leads to counter-intuitive phenomena such as negative refraction. We report the experimental implementation of a three-dimensional negative-index metamaterial operating at an ultraviolet wavelength of 364nm. The metamaterial, based upon the concept of stacked coupled plasmonic waveguides, is fabricated using alternating layers of Ag and TiO2 and designed to have a quasi-isotropic refractive index close to ‹1, for both phase and power flow, represents a key step towards implementing the yet-unrealized three-dimensional free-space flat lens or Pendry-Veselago superlens.
Citation: Nature
Volume: 497
Issue: 7450
Pages: pp. 470 - 474
Research Areas: Nanofabrication, Optics
PDF version: PDF Document Click here to retrieve PDF version of paper (1MB)