Liquid crystal clad near-infrared metamaterials with tunable negative-zero-positive refractive indices

Douglas H. Werner, Do Hoon Kwon, Iam Choon Khoo, Alexander V. Kildishev, Vladimir M. Shalaev

Research output: Contribution to journalArticle

146 Scopus citations

Abstract

Near-infrared metamaterials that possess a reconfigurable index of refraction from negative through zero to positive values are presented. Reconfigurability is achieved by cladding thin layers of liquid crystal both as a superstrate and a substrate on an established negative-index metamaterial, and adjusting the permittivity of the liquid crystal. Numerical results show that the index of refraction for the proposed structure can be changed over the range from -1 to +1.8 by tuning the liquid crystal permittivity from 2 to 6 at a wavelength of 1.4 μm.

Original languageEnglish (US)
Pages (from-to)3342-3347
Number of pages6
JournalOptics Express
Volume15
Issue number6
DOIs
StatePublished - Mar 19 2007

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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