Ultraviolet surface-enhanced Raman scattering at the plasmonic band edge of a metallic grating

Surface-enhanced Raman Scattering (SERS) is studied in sub-wavelength metallic gratings on a substrate using a rigorous electromagnetic approach. In the ultraviolet SERS is limited by the metallic dampening, yet enhancements as large as 10(5) are predicted. It is shown that these enhancements are di...

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Bibliographic Details
Published in:Optics express 2012-01, Vol.20 (2), p.1868-1877
Main Authors: Mattiucci, Nadia, D'Aguanno, Giuseppe, Everitt, Henry O, Foreman, John V, Callahan, John M, Buncick, Milan C, Bloemer, Mark J
Format: Article
Language:English
Subjects:
Aluminum Oxide - chemistry
Electromagnetic Fields
Lasers
Metals
Models, Theoretical
Spectrum Analysis, Raman - instrumentation
Spectrum Analysis, Raman - methods
Surface Plasmon Resonance - instrumentation
Surface Plasmon Resonance - methods
Surface Properties
Ultraviolet Rays
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Summary:Surface-enhanced Raman Scattering (SERS) is studied in sub-wavelength metallic gratings on a substrate using a rigorous electromagnetic approach. In the ultraviolet SERS is limited by the metallic dampening, yet enhancements as large as 10(5) are predicted. It is shown that these enhancements are directly linked to the spectral position of the plasmonic band edge of the metal/substrate surface plasmon. A simple methodology is presented for selecting the grating pitch to produce optimal enhancement for a given laser frequency.
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.20.001868