Diffraction-managed superlensing using plasmonic lattices

We show that subwavelength diffracted wave fields may be managed inside multilayered plasmonic devices to achieve ultra-resolving lensing. For that purpose we first transform both homogeneous waves and a broad band of evanescent waves into propagating Bloch modes by means of a metal/dielectric (MD)...

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Bibliographic Details
Published in:Optics communications 2012-07, Vol.285 (16), p.3358-3362
Main Authors: Zapata-Rodríguez, Carlos J., Pastor, David, Caballero, María T., Miret, Juan J.
Format: Article
Language:English
Subjects:
Anisotropy
Beams (radiation)
Devices
Diffraction
Evanescent waves
Imaging
Plasmonic devices
Plasmonics
Superresolution
Wave propagation
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Summary:We show that subwavelength diffracted wave fields may be managed inside multilayered plasmonic devices to achieve ultra-resolving lensing. For that purpose we first transform both homogeneous waves and a broad band of evanescent waves into propagating Bloch modes by means of a metal/dielectric (MD) superlattice. Beam spreading is subsequently compensated by means of negative refraction in a plasmon-induced anisotropic medium that is cemented behind. A precise design of the superlens doublet may lead to nearly aberration-free images with subwavelength resolution in spite of using optical paths longer than a wavelength.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2012.04.011