TITLE

Photonic crystals with silver nanowires as a near-infrared superlens

AUTHOR(S)
Xinhua Hu; Chan, C. T.
PUB. DATE
August 2004
SOURCE
Applied Physics Letters;8/30/2004, Vol. 85 Issue 9, p1520
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Lensing effect can be achieved in photonic crystal (PC) slabs, but in many situations, the mechanism can be traced to the self-collimation effect of a square-like constant frequency surface. We show that using a metal-in-dielectric configuration, circular constant frequency surface can be obtained, and the lensing effect then obeys fairly well the image–distance relationship characteristic of an n=-1 material. As a two-dimensional example, far-field imaging is realized in square arrays of silver nanowires in air for transverse-electric waves at 400 nm. A high resolution of resolution of about 100 nm obtained with a three layer slab of such PCs. By varying the matrix, the results are extended to optic and near-infrared regime.
ACCESSION #
14258807

 

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