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Proceedings Paper

Inverting scattered fields for sub-wavelength resolution using negative index metamaterials
Author(s): Y. Zhang; M. A. Fiddy
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Paper Abstract

Sub-wavelength resolution using a negative index metamaterial appears to be severely limited in practice, particularly due to material losses. We present some numerical studies on what high spatial frequency information about a thin and a thick object can be obtained, assuming multiple scattering and coupling between evanescent and propagating waves. Weak scattering approximations cannot be assumed as scattering features reduce in size and become subwavelength in nature making an inverse scattering approach necessary in order to relate the measured superresolved field to object index or permittivity fluctuations. We discuss the relationship between the field in the object and image domains and discuss possible procedures for recovering subwavelength index fluctuations from measured data.

Paper Details

Date Published: 28 February 2011
PDF: 8 pages
Proc. SPIE 7946, Photonic and Phononic Properties of Engineered Nanostructures, 79460V (28 February 2011); doi: 10.1117/12.873986
Show Author Affiliations
Y. Zhang, Nanyang Technological Univ. (Singapore)
M. A. Fiddy, The Univ. of North Carolina at Charlotte (United States)

Published in SPIE Proceedings Vol. 7946:
Photonic and Phononic Properties of Engineered Nanostructures
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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