Nanoplasmonic surfaces enabling strong surfacenormal electric field enhancement

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Author
Güngör, K.
Ünal, E.
Demir, H. V.
Date
2013Journal Title
Optics Express
Print ISSN
10944087
Publisher
Optical Society of American (OSA)
Volume
21
Issue
20
Pages
23097 - 23106
Language
English
Type
Article
Metadata
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http://hdl.handle.net/11693/20768Abstract
Conventional two-dimensional (2D) plasmonic arrays provide electric field intensity enhancement in the plane, typically with a surface coverage around 50% in the plan-view. Here, we show nanoplasmonic three-dimensional (3D) surfaces with 100% surface coverage enabling strong surface-normal field enhancement. Experimental measurements are found to agree well with the full electromagnetic solution. Along with the surface-normal localization when using the plasmonic 3D-surface, observed maximum field enhancement is 7.2-fold stronger in the 3D-surface than that of the 2D counterpart structure. 3D-plasmonic nonplanar surfaces provide the ability to generate volumetric field enhancement, possibly useful for enhanced plasmonic coupling and interactions. © 2013 Optical Society of America.
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http://dx.doi.org/10.1364/OE.21.023097Related items
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