Studies of plasmonic hot-spot translation by a metal-dielectric layered superlens

Mark D. Thoreson, Rasmus Bundgaard Nielsen, Paul R. West, Arian Kriesch, Zhengtong Liu, Jieran Fang, Alexander V. Kildishev, Ulf Peschel, Vladimir M. Shalaev, Alexandra Boltasseva

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Abstract

We have studied the ability of a lamellar near-field superlens to transfer an enhanced electromagnetic field to the far side of the lens. In this work, we have experimentally and numerically investigated superlensing in the visible range. By using the resonant hot-spot field enhancements from optical nanoantennas as sources, we investigated the translation of these sources to the far side of a layered silver-silica superlens operating in the canalization regime. Using near-field scanning optical microscopy (NSOM), we have observed evidence of superlens-enabled enhanced-field translation at a wavelength of about 680 nm. Specifically, we discuss our recent experimental and simulation results on the translation of hot spots using a silver-silica layered superlens design. We compare the experimental results with our numerical simulations and discuss the perspectives and limitations of our approach.
Original languageEnglish
JournalProceedings of SPIE, the International Society for Optical Engineering
Volume8093
Pages (from-to)80931J
ISSN0277-786X
DOIs
Publication statusPublished - 2011

Bibliographical note

Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Keywords

  • Finite-difference time-domain simulations
  • Canalization
  • Superlens
  • Near-field scanning optical microscopy
  • Silver
  • Silicon dioxide

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