Three-dimensional plasmonic nanofocusing

Nathan C. Lindquist, Prashant Nagpal, Antoine Lesuffleur, David J. Norris, Sang Hyun Oh

Research output: Contribution to journalArticlepeer-review

146 Scopus citations

Abstract

We demonstrate three-dimensional plasmonic nanofocusing of light with patterned metallic pyramids obtained via template stripping. Gratings on the faces of these pyramids convert linearly polarized light into plasmons that propagate toward and converge at a ∼10 nm apex. Experiments and computer simulations confirm that optical energy is focused into a nanoscale volume (5 - 105 wavelength3). Because these structures are easily and reproducibly fabricated, our results could benefit many applications, including imaging, sensing, lithography, and nonlinear spectroscopy.

Original languageEnglish (US)
Pages (from-to)1369-1373
Number of pages5
JournalNano letters
Volume10
Issue number4
DOIs
StatePublished - Apr 14 2010

Keywords

  • Nanofocusing
  • Surface Plasmon
  • Template stripping

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