Near-field Moiré effect mediated by surface plasmon polariton excitation

Zhaowei Liu*, Stéphane Durant, Hyesog Lee, Yi Xiong, Yuri Pikus, Cheng Sun, Xiang Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

We have demonstrated a surface plasmon polariton mediated optical Moiré effect by inserting a silver slab between two subwavelength gratings. Enhancement of the evanescent fields by the surface plasmon excitations on the silver slab leads to a remarkable contrast improvement in the Moiré fringes from two subwavelength gratings. Numerical calculations, which agree very well with the experimental observation of evanescent-wave Moiré fringes, elucidate the crucial role of the surface plasmon polaritons. The near-field Moiré effect has potential applications to extend the existing Moiré techniques to subwavelength characterization of nanostructures.

Original languageEnglish (US)
Pages (from-to)629-631
Number of pages3
JournalOptics Letters
Volume32
Issue number6
DOIs
StatePublished - Mar 15 2007

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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