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Simulated causal subwavelength focusing by a negative refractive index slab
Subwavelength electromagnetic focusing by a negative refractive index slab is shown to occur in a full wave numerical simulation of a causal, physically realizable negative index material. Limitations...
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Limitations on subdiffraction imaging with a negative refractive index slab

Appl. Phys. Lett. 82, 1506 (2003); doi:10.1063/1.1554779

Issue Date: 10 March 2003

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David R. Smith, David Schurig, Marshall Rosenbluth, and Sheldon Schultz
Department of Physics, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0319

S. Anantha Ramakrishna and John B. Pendry
The Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2BZ
A planar slab of material, for which both the permittivity and permeability have the values of –1, can bring not only the propagating fields associated with a source to a focus, but can also refocus the nonpropagating near fields, thereby achieving resolution beyond the diffraction limit. We study the sensitivity of this subwavelength focus to the slab material properties and periodicity, and note the connection to slab surface plasmon modes. We conclude that significant subwavelength resolution is achievable with a single negative index slab, but only over a restrictive range of parameters. ©2003 American Institute of Physics.
History: Received 12 November 2002; accepted 3 January 2003
Permalink: http://link.aip.org/link/?APPLAB/82/1506/1
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EDITORIALLY RELATED

  1. Simulated causal subwavelength focusing by a negative refractive index slab
    Steven A. Cummer
    Appl. Phys. Lett. 82, 1503 (2003)

KEYWORDS and PACS

Keywords
PACS
  • 78.20.Ci
    Optical constants including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity
  • 42.25.Gy
    Edge and boundary effects; optical reflection and refraction
  • YEAR: 2003

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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REFERENCES (11)
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