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Journal of Nanophotonics

Remote-excitation surface-enhanced Raman scattering with counter-propagating plasmons: silver nanowire-nanoparticle system
Author(s): Arindam Dasgupta; Danveer Singh; Shreyash Tandon; Ravi P. N. Tripathi; G. V. Pavan Kumar
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Paper Abstract

Surface-enhanced Raman scattering (SERS) has emerged as a powerful tool to probe molecules at nanoscale. By utilizing plasmon polaritons on metallic nanowires, remote-excitation SERS can be achieved. Enhancement and modulation of remote-SERS intensity are vital for nano-optical spectroscopy. Counter-propagating plasmons have been excited in a plasmonic nanowire-nanoparticle (NW-NP) system and further utilized to perform remote-excitation SERS. By using the polarization of counter-propagating fields, remote-SERS intensity from NW-NP hot-spot junction was enhanced and modulated. Such capabilities of counter-propagating plasmons to control optical fields and SERS intensity at NW-NP junction can have implications in nanowire photonics and nano-optical spectroscopy.

Paper Details

Date Published: 23 December 2013
PDF: 11 pages
J. Nanophoton. 8(1) 083899 doi: 10.1117/1.JNP.8.083899
Published in: Journal of Nanophotonics Volume 8, Issue 1
Show Author Affiliations
Arindam Dasgupta, Indian Institute of Science Education & Research Pune (India)
Danveer Singh, Indian Institute of Science Education & Research Pune (India)
Shreyash Tandon, Indian Institute of Science Education & Research Pune (India)
Ravi P. N. Tripathi, Indian Institute of Science Education & Research Pune (India)
G. V. Pavan Kumar, Indian Institute of Science Education & Research Pune (India)


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