Nonlinear optical properties of multi-metal nanocomposites in a glass matrix

Hernando Garcia, Ramki Kalyanaraman, Radhakrishna Sureshkumar

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

The lower and upper bounds for the nonlinear susceptibility of a multi-component nanocomposite composed of a glass host and nanoparticles of multiple metals are calculated within the context of the Hashin-Shtrikman formulation. We have applied this effective medium theory to the following ternary composites: AgCu:SiO2 and AgAu:SiO2 in the form of mixtures. These bounds were used to estimate the limits of the nonlinear effective third-order susceptibility of the composite as a function of wavelength, volume fraction and particle size. It is shown that the modulation of the third-order susceptibility of the metal by local-field enhancement due to plasmon resonance results in unexpected nonlinear responses which could be of interest to surface-enhanced Raman scattering, plasmonics and nanophotonics.

Original languageEnglish (US)
Article number175401
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume42
Issue number17
DOIs
StatePublished - Nov 9 2009
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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