Toward broadband plasmonics: Tuning dispersion in rhombic plasmonic crystals

Wei Zhou, Hanwei Gao, Teri W Odom

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The angle-dependent optical properties of rhombic plasmonic crystals are described. We show that by extending the capabilities of soft interference lithography, subwavelength periodic patterns with arbitrary 2D Bravais lattices can be generated. In addition, we demonstrate that by lowering the plasmonic crystal lattice symmetry, degenerate conditions can be lifted and more plasmon bands can be excited within a fixed wavelength range. Degeneracies were also removed by changing the polar and azimuthal angles of excitation and visualized in dispersion diagrams. Anticrossings between different plasmon bands were observed to depend significantly on the local refractive index and the excitation direction.

Original languageEnglish
Pages (from-to)1241-1247
Number of pages7
JournalACS Nano
Volume4
Issue number2
DOIs
Publication statusPublished - Feb 23 2010

Fingerprint

Crystal symmetry
Crystal lattices
Lithography
Refractive index
Optical properties
Tuning
tuning
broadband
Wavelength
Crystals
crystal lattices
excitation
crystals
lithography
diagrams
refractivity
interference
optical properties
symmetry
wavelengths

Keywords

  • Anticrossings
  • Band gaps
  • Dispersion diagram
  • Plasmonic crystal
  • Rhombic lattice

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Toward broadband plasmonics : Tuning dispersion in rhombic plasmonic crystals. / Zhou, Wei; Gao, Hanwei; Odom, Teri W.

In: ACS Nano, Vol. 4, No. 2, 23.02.2010, p. 1241-1247.

Research output: Contribution to journalArticle

Zhou, Wei ; Gao, Hanwei ; Odom, Teri W. / Toward broadband plasmonics : Tuning dispersion in rhombic plasmonic crystals. In: ACS Nano. 2010 ; Vol. 4, No. 2. pp. 1241-1247.
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