TITLE

Refractive transmission of light and beam shaping with metallic nano-optic lenses

AUTHOR(S)
Sun, Zhijun; Hong Koo Kim
PUB. DATE
July 2004
SOURCE
Applied Physics Letters;7/26/2004, Vol. 85 Issue 4, p642
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have performed finite-difference time-domain (FDTD) analysis of optical transmission through a nanoslit array structure formed on a metal layer with tapered film thickness. The analysis result shows refractive transmission of light through the nanoslit array, opening up the possibility of creating metallic lenses that resemble glass lenses in their shape. Metallic lenses with curved surfaces are designed such that each nanoslit element transmits light with phase retardation controlled by the metal thickness in the aperture region. The FDTD analysis result demonstrates a focusing or collimating function of convex-shaped metal lenses.
ACCESSION #
13885846

 

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