Slanted layered superlenses for subwavelength light manipulation

We demonstrate numerically the operation of optical microelements consisting of metal-dielectric multilayers with slanted edges. We show examples of optical devices for imaging with sub-wavelength resolution, for focusing in a sub-wavelength-sized area, for manipulation of the state of polarisation,...

Full description

Saved in:
Bibliographic Details
Main Authors: Pastuszczak, A., Stolarek, M., Kotynski, R.
Format: Conference Proceeding
Language:English
Subjects:
Finite difference methods
Focusing
Image resolution
metal-dielectric multilayer
Metamaterials
Nonhomogeneous media
skin depth
super-resolution
superlens
Time domain analysis
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We demonstrate numerically the operation of optical microelements consisting of metal-dielectric multilayers with slanted edges. We show examples of optical devices for imaging with sub-wavelength resolution, for focusing in a sub-wavelength-sized area, for manipulation of the state of polarisation, and for cross-coupling between the propagating and evanescent parts of the spatial spectrum. The multilayers that are used by us consist of silver and a high refractive index dielectric and may be regarded as optimised low-loss metamaterials with a large effective anisotropy, with reduced Fabry-Perot resonances, with impedance matched to the host medium and with diffraction-free properties. The metamaterials are designed by us with the transfer matrix method and with use of the framework of linear-shift-invariant systems, while the device as a whole is analysed using the finite difference time domain method.
ISSN:2162-7339
DOI:10.1109/ICTON.2011.5971070