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Proceedings Paper

Fourier optics and near-field superlens
Author(s): Yunlong Sheng; Guillaume Tremblay; Yann Gravel
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Paper Abstract

Fundamental Fourier optics is applied to metallic near-field superlens, whose transfer function is computed with the transfer matrix, the Surface Plasmon Polariton (SPP) resonance and the SPP waveguide theory. However, when the object nano-structure consists of feature nano-slits and nano-holes etc, which are as the basic object elements to scatter the light, especially when the objects are metal, the electrical dipoles are induced at the nano-slits and nano-holes by the illuminating light, the space invariance condition can be not respected within the dimension of the nano-meter scale objects, so that the point spread function becomes approximate and the superlens is usually characterized by the image of a two nano-slit pattern. The superlens is designed and optimized based on the transfer function. Improvement in the transfer function can improve significantly the image quality. The real image of the near-field superlens can be computed with numerical simulation using the FDTD method.

Paper Details

Date Published: 20 September 2011
PDF: 5 pages
Proc. SPIE 8122, Tribute to Joseph W. Goodman, 81220K (20 September 2011);
Show Author Affiliations
Yunlong Sheng, Univ. Laval (Canada)
Guillaume Tremblay, Univ. Laval (Canada)
Yann Gravel, Univ. Laval (Canada)

Published in SPIE Proceedings Vol. 8122:
Tribute to Joseph W. Goodman
H. John Caulfield; Henri H. Arsenault, Editor(s)

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