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Limitations on Sub-Diffraction Imaging with a Negative Refractive Index Slab

D. R. Smith·D. Schurig·Marshall Rosenbluth·S. Schultz·S. Anantha Ramakrishna·J. B. Pendry
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Abstract

Recently it has been proposed that a planar slab of material, for which both the permittivity and permeability have the values of -1, could bring not only the propagating fields associated with a source to a focus, but could also refocus the nonpropagating near-fields, thereby achieving a subdiffraction image. In this work we discuss the sensitivity of the subwavelength focus to various slab parameters, pointing out the connection to slab plasmon modes. We also note and resolve a paradox associated with the perfect imaging of a point source. We conclude that subwavelength resolution is achievable with available technology, but only by implementation of a critical set of design parameters.

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D. R. Smith, D. Schurig, Marshall Rosenbluth, S. Schultz, S. Anantha Ramakrishna, J. B. Pendry. 2002-06-28. Limitations on Sub-Diffraction Imaging with a Negative Refractive Index Slab. https://doi.org/10.1063/1.1554779

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