Plasmonic band gap structures for surface-enhanced Raman scattering
Date
2008Source Title
Optics Express
Print ISSN
10944087
Publisher
Optical Society of American (OSA)
Volume
16
Issue
17
Pages
12469 - 12477
Language
English
Type
ArticleItem Usage Stats
318
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184
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Abstract
Surface-enhanced Raman Scattering (SERS) of rhodamine 6G (R6G) adsorbed on biharmonic metallic grating structures was studied. Biharmonic metallic gratings include two different grating components, one acting as a coupler to excite surface plasmon polaritons (SPP), and the other forming a plasmonic band gap for the propagating SPPs. In the vicinity of the band edges, localized surface plasmons are formed. These localized Plasmons strongly enhance the scattering efficiency of the Raman signal emitted on the metallic grating surfaces. It was shown that reproducible Raman scattering enhancement factors of over 10 5 can be achieved by fabricating biharmonic SERS templates using soft nano-imprint technique. We have shown that the SERS activities from these templates are tunable as a function of plasmonic resonance conditions. Similar enhancement factors were also measured for directional emission of photoluminescence. At the wavelengths of the plasmonic absorption peak, directional enhancement by a factor of 30 was deduced for photoluminescence measurements. © 2008 Optical Society of America.
Keywords
Diffraction gratingsEnergy gap
Gallium alloys
Metallic soaps
Optical data storage
Plasmons
Scattering
Surface plasmon resonance
Band edges
Band gaps
Bi-harmonic
Enhancement factors
Grating components
Localized surface plasmons
Metallic gratings
Plasmonic band gap structures
Raman signals
Rhodamine 6G
Scattering efficiencies
Surface-enhanced raman scattering
Surface-plasmon polaritons
Raman scattering
rhodamine
rhodamine 6G
article
chemistry
equipment
equipment design
instrumentation
light
radiation scattering
Raman spectrometry
refractometry
surface plasmon resonance
Equipment Design
Equipment Failure Analysis
Light
Refractometry
Rhodamines
Scattering, Radiation
Spectrum Analysis, Raman
Surface Plasmon Resonance
Permalink
http://hdl.handle.net/11693/23033Published Version (Please cite this version)
http://dx.doi.org/10.1364/OE.16.012469Collections
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