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The effect of periodicity on the extraordinary optical transmission of annular aperture arrays.

Authors :
Kofke, Matthew J.
Waldeck, David H.
Fakhraai, Zahra
Ip, Shell
Walker, Gilbert C.
Source :
Applied Physics Letters; 1/12/2009, Vol. 94 Issue 2, pN.PAG, 3p, 1 Diagram, 3 Graphs
Publication Year :
2009

Abstract

This work systematically evaluates the effect of array periodicity on the near infrared transmission characteristics of annular aperture arrays (AAAs) in gold films. Both the experimental and theoretical transmission spectra of AAAs are shown to be sensitive to the period and the arrangement of the apertures within the array. The spectra of square arrays with periods ranging from 1400 to 600 nm show a strong correlation with surface plasmon polariton (SPP)-Bloch modes of the metal/dielectric interfaces. For rectangular AAAs the transmission spectra are significantly attenuated and reveal a polarization sensitivity that arises from the breaking of the symmetry and degeneracy of the SPP-Bloch modes. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00036951
Volume :
94
Issue :
2
Database :
Complementary Index
Journal :
Applied Physics Letters
Publication Type :
Academic Journal
Accession number :
36258498
Full Text :
https://doi.org/10.1063/1.3067835