Plasmonic band gap structures for surface-enhanced Raman scattering

Optics Express
Askin KocabasAtilla Aydinli

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.

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Citations

Aug 31, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Yongwen TanDi Zhang
Aug 1, 2012·ACS Nano·Sencer AyasAykutlu Dâna
Dec 30, 2011·Analytical and Bioanalytical Chemistry·Dana CiallaJürgen Popp
May 13, 2009·Optics Express·Selim OlcumAtilla Aydinli
Sep 3, 2009·Optics Express·S Seckin SenlikAtilla Aydinli
Feb 23, 2010·Optics Express·Mohammed Nadhim AbbasM H Shih
Nov 2, 2014·Optics Letters·Ertugrul KarademirAtilla Aydinli
Oct 24, 2013·Optics Express·Ming Lun TsengDin Ping Tsai
Aug 15, 2013·Physical Chemistry Chemical Physics : PCCP·Yuejiao GuWeiqing Xu

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