Influence of granularity on the optical properties of a negative-refractive-index lens
Journal
Physical Review A - Atomic, Molecular, and Optical Physics
Journal Volume
78
Journal Issue
1
Date Issued
2008
Author(s)
Li, J.
Abstract
We show quantitatively the influence of the dipole density on the resolving capability of a negative-refractive-index slab. A numerical solution for scatter with a model that represents a locally periodic array of electric and magnetic dipoles provides a means for evaluating the influence of periodicity. A Fourier transform of the spatial field solution gives access to the plane wave transfer function in relation to the degree of granularity. Throughout, a quasistatic homogenization procedure is used to ensure that correctly matched effective medium parameters are achieved. The results provide a measure of the fabrication technology necessary to achieve substantially subwavelength resolution.
Type
journal article