Direct evidence for surface plasmon-mediated enhanced light transmission through metallic nanohole arrays

Hanwei Gao; Joel Henzie; Teri W. Odom

doi:10.1021/nl061670r

Direct evidence for surface plasmon-mediated enhanced light transmission through metallic nanohole arrays

Hanwei Gao, Joel Henzie, Teri W. Odom

Northwestern University

Research output: Contribution to journal › Article

227 Citations (Scopus)

Abstract

This paper provides direct evidence for the role of surface plasmons in the enhanced optical transmission of light through metallic nanoscale hole arrays. Near-field optical images directly confirmed the presence of surface plasmons on gold nanohole arrays with interhole spacings larger than the surface plasmon wavelength. A simple interference model provides an intuitive explanation of the two types of fringe wavelengths observed in the near-field optical images. Far-field spectroscopy revealed a surface plasmon band that contributed a factor >8 to the transmission enhancement. Furthermore, silicon nanohole arrays did not exhibit any features in the near-field, which demonstrates that metallic materials are necessary for enhanced light transmission through nanohole arrays.

Original language	English
Pages (from-to)	2104-2108
Number of pages	5
Journal	Nano letters
Volume	6
Issue number	9
DOIs	https://doi.org/10.1021/nl061670r
Publication status	Published - Sep 1 2006

ASJC Scopus subject areas

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

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Gao, H., Henzie, J., & Odom, T. W. (2006). Direct evidence for surface plasmon-mediated enhanced light transmission through metallic nanohole arrays. Nano letters, 6(9), 2104-2108. https://doi.org/10.1021/nl061670r

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