Confinement of Surface Plasmon Polaritons by Heterostructures of Plasmonic Crystals

Hikaru Saito, Shohei Mizuma, Naoki Yamamoto

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Square lattice plasmonic crystals (SQ-PlCs) composed of silver pillars generate large bandgaps for surface plasmon polaritons (SPPs). SPP confinement is demonstrated using one- and two-dimensional heterostructures of SQ-PlCs comprised of cylindrical pillars with different diameters in a common square lattice. Two kinds of localized modes are observed to appear in the heterostructures by photon map imaging using cathodoluminescence (CL) technique combined with a scanning transmission electron microscopy (STEM). Angle-resolved CL spectroscopy reveals contrasting characteristics of the two localized modes in their emission distributions, indicating that they originate from the band-edge A and E modes of the matrix SQ-PlC.

Original languageEnglish
Pages (from-to)6789-6793
Number of pages5
JournalNano Letters
Issue number10
Publication statusPublished - Oct 14 2015

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering


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