Extraordinary transmission through metal-coated monolayers of microspheres

The spectral dependence of the extraordinary transmission through monolayers of close-packed silica or polystyrene microspheres on a quartz support, covered with different thin metal films (Ag, Au and Ni) was investigated. The measured spectra were compared with modeled transmission spectra using fi...

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Bibliographic Details
Published in:	Optics express Vol. 17; no. 2; pp. 761 - 772
Main Authors:	Landström, L, Brodoceanu, D, Bäuerle, D, Garcia-Vidal, F J, Rodrigo, Sergio G, Martin-Moreno, L
Format:	Journal Article
Language:	English
Published:	United States 19-01-2009
Subjects:	Chemistry Inorganic chemistry Kemi NATURAL SCIENCES NATURVETENSKAP Oorganisk kemi
Online Access:	Get full text
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Summary:	The spectral dependence of the extraordinary transmission through monolayers of close-packed silica or polystyrene microspheres on a quartz support, covered with different thin metal films (Ag, Au and Ni) was investigated. The measured spectra were compared with modeled transmission spectra using finite difference time domain (FDTD) calculations. Measured and modeled spectra show good overall agreement. The supported modes in the sphere array were found to be of utmost importance for the transmission mechanism and the results also suggest that the presence of guided modes in the photonic crystal may further enhance the extraordinary transmission through the metal film.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1094-4087 1094-4087
DOI:	10.1364/oe.17.000761