Size dependence of band structures in a two-dimensional plasmonic crystal with a square lattice

Naoki Yamamoto, Hikaru Saito

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A scanning transmission electron microscope (STEM) -cathodoluminescence (CL) technique is used to investigate the size dependence of the band structures in two-dimensional plasmonic crystals with a square lattice (SQ-PlCs) composed of cylindrical pillars and holes. The experimentally determined and calculated dependences of the band edge energies of the three SPP modes at the γ point on the diameter of the cylindrical structure agree well. The photon maps reveal the field strength distributions of the standing SPP waves of the three eigenmodes. Additionally, a mechanism is proposed to explain the dependence of the contrast on the detected light polarization.

Original languageEnglish
Pages (from-to)29761-29777
Number of pages17
JournalOptics Express
Volume22
Issue number24
DOIs
Publication statusPublished - Dec 1 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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