Subdiffraction-limited imaging based on longitudinal modes in a spatially dispersive slab

Avner Yanai, Uriel Levy

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


It was proposed that a flat silver layer could be used to form a subdiffraction-limited image when illuminated near its surface plasmon resonance frequency [J. B. Pendry, Phys. Rev. Lett. 85, 3966 (2000)10.1103/PhysRevLett. 85.3966]. In this paper, we study the possibility of obtaining sub diffraction resolution using a different mechanism, with no surface plasmons involved. Instead, by taking into account the nonlocal response of a thin silver slab, we show that longitudinal modes contribute to the formation of a subdiffraction-limited image in a frequency regime above the plasma frequency. The differences between these two distinct mechanisms are studied and explained.

Original languageAmerican English
Article number075107
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number7
StatePublished - 6 Aug 2014


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