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Title: Raman scattering enhancement in photon-plasmon resonance mediated metal-dielectric microcavity

Here, we report the photon-plasmon interaction scheme and enhanced field strengths resulted into the amplification of phonon in a novel microcavity. A metal-dielectric microcavity, with unified cavity photonic mode and localized surface plasmon resonances, is visualized by impregnating the gold nanoparticles into the deep see-through nano-sized pores of porous silicon microcavity. The intense optical field strengths resulting from the photon-plasmon interactions are probed by both resonant and non-resonant Raman scattering experiments. Due to photon-plasmon-phonon interaction mechanism, several orders of enhancement in the intensity of scattered Raman Stokes photon (at 500 cm{sup −1}) are observed. Our metal nanoparticle-microcavity hybrid system shows the potential to improve the sensing figure of merit as well as the applications of plasmonics for optoelectronics, photovoltaics, and related technologies.
Authors:
;  [1] ; ;  [2]
  1. School of Physics, University of Hyderabad, Hyderabad 500 046 (India)
  2. Nanophotonics Laboratory, Department of Physics, IIT Delhi, New Delhi 110 016 (India)
Publication Date:
OSTI Identifier:
22266155
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 114; Journal Issue: 22; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; AMPLIFICATION; CAVITIES; DIELECTRIC MATERIALS; GOLD; HYBRID SYSTEMS; NANOSTRUCTURES; PHONONS; PHOTONS; PHOTOVOLTAIC EFFECT; POROUS MATERIALS; RAMAN EFFECT; SILICON