Birefringent cadmium-telluride-based metamaterial

M. L. Markham, J. J. Baumberg, D. C. Smith, X. Li, T. Gabriel, G. S. Attard, I. Nandhakumar

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19 Scopus citations

Abstract

A CdTe-based optical metamaterial, with large induced optical birefringence (4%), has been produced and its optical properties fully characterized and modeled over the spectral range 1500- 450 nm. This metamaterial, which is related to mesoporous silica, is made using electrochemical deposition in the presence of a lyotropic liquid crystal template. This process produces a stoichiometric CdTe film containing a hexagonal array of ∼4.2 nm cylindrical pores with interpore separation ∼6.5 nm. A model of the dielectric properties of the films indicates that their birefringence can be entirely attributed to the film's nanoporosity.

Original languageEnglish
Article number011912
Pages (from-to)011912-1-011912-3
JournalApplied Physics Letters
Volume86
Issue number1
DOIs
StatePublished - Jan 2005
Externally publishedYes

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