Tailoring the sensing capabilities of nanohole arrays in gold films with Rayleigh anomaly-surface plasmon polaritons

Jeffrey M. McMahon, Joel Henzie, Teri W Odom, George C Schatz, Stephen K. Gray

Research output: Contribution to journalArticle

126 Citations (Scopus)

Abstract

Surface plasmon polaritons (SPPs) and diffraction effects such as Rayleigh anomalies (RAs) play key roles in the transmission of light through periodic subwavelength hole arrays in metal films. Using a combination of theory and experiment we show how refractive index (RI) sensitive transmission features arise from hole arrays in thin gold films. We show that large transmission amplitude changes occur over a narrow range of RI values due to coupling between RAs and SPPs on opposite sides of the metal film. Furthermore, we show how to predict, on the basis of a relatively simple analysis, the periodicity and other system parameters that should be used to achieve this "RA-SPP" effect for any desired RI range.

Original languageEnglish
Pages (from-to)18119-18129
Number of pages11
JournalOptics Express
Volume15
Issue number26
DOIs
Publication statusPublished - Dec 24 2007

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polaritons
refractivity
anomalies
gold
metal films
periodic variations
diffraction

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Tailoring the sensing capabilities of nanohole arrays in gold films with Rayleigh anomaly-surface plasmon polaritons. / McMahon, Jeffrey M.; Henzie, Joel; Odom, Teri W; Schatz, George C; Gray, Stephen K.

In: Optics Express, Vol. 15, No. 26, 24.12.2007, p. 18119-18129.

Research output: Contribution to journalArticle

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