Imaging performance of an isotropic negative dielectric constant slab.
The influence of material and thickness on the subwavelength imaging performance of a negative dielectric constant slab is studied. Resonance in the plane-wave transfer function produces a high spatial frequency ripple that could be useful in fabricating periodic structures. A cost function based on the plane-wave transfer function provides a useful metric to evaluate the planar slab lens performance, and using this, the optimal slab dielectric constant can be determined.
Shivanand
School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907-2035, USA.
Liu
Huikan
H
Webb
Kevin J
KJ