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Improved Analytical Models for Single- and Multi-layer Silver Superlenses

Published online by Cambridge University Press:  31 January 2011

Ciaran P Moore ,
Richard John Blaikie  and
Matthew D Arnold
Ciaran P Moore
Affiliation:
[email protected], University of Canterbury, Department of Electrical and Computer Engineering, Christchurch, New Zealand
Richard John Blaikie
Affiliation:
[email protected], University of Canterbury, Department of Electrical and Computer Engineering, Christchurch, New Zealand
Matthew D Arnold
Affiliation:
[email protected], University of Technology Sydney, Department of Physics and Advanced Materials, Sydney, New South Wales, Australia
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Abstract

Spatial-frequency transfer functions are regularly used to model the imaging performance of near-field �superlens� systems. However, these do not account for interactions between the object that is being imaged and the superlens itself. As the imaging in these systems is in the near field, such interactions are important to consider if accurate performance estimates are to be obtained. We present here a simple analytical modification that can be made to the transfer function to account for near-field interactions for objects consisting of small apertures in otherwise-continuous metal screens. The modified transfer functions are evaluated by comparison with full-field finite-element simulations for representative single-layer and multi-layer silver superlenses, and good agreement is found.

Keywords

optical propertiesmetalAg
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1182: Symposium EE – Materials for Nanophotonics–Plasmonics, Metamaterials and Light Localization , 2009 , 1182-EE11-02
Copyright
Copyright © Materials Research Society 2009

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