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

Journal Article · Sat Dec 14 04:00:00 EST 2013 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4842995· OSTI ID:22266155

Guddala, Sriram; Dwivedi, Vindesh K.; Vijaya Prakash, G. ^[1]

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1. Nanophotonics Laboratory, Department of Physics, IIT Delhi, New Delhi 110 016 (India)

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.

• OSTI ID: 22266155
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 22 Vol. 114; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
AMPLIFICATION
CAVITIES
DIELECTRIC MATERIALS
GOLD
HYBRID SYSTEMS
NANOSTRUCTURES
PHONONS
PHOTONS
PHOTOVOLTAIC EFFECT
POROUS MATERIALS
RAMAN EFFECT
SILICON