Ultrafast optical nonlinearities of metal nanoparticles: Single-particle measurements and correlation to structure

Norbert F. Scherer, Matthew Pelton, Rongchao Jin, Justin E. Jureller, Mingzhao Liu, Hee Y. Kim, Sungnam Park, Philippe Guyot-Sionnest

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


We have measured nonlinear scattering from plasmons in individual Au nanorods and have correlated second-harmonic activity of Ag nanoparticles and clusters to morphology. The measurements reveal novel ultrafast nonlinear phenomena related to electron confinement. Surprisingly, the coherent plasmon response is suppressed relative to the hot electron response indicating enhanced plasmon dephasing. In a parallel set of studies we demonstrate nanometer scale localization of the nonlinear optical response of single nanoparticles and aggregates and correlate this with their morphology. Position markers are fabricated on an optical and electron-transparent substrate (Si 3N4 thin film) that allows optical measurements and transmission electron microscopy (TEM) imaging of the identical nanoparticles or aggregates. The second harmonic (SH) activity optical image of individual Ag nanostructures is registered with the TEM image. Centroid localization of the optical signals allows correlation with better than 25 nm precision. This is sufficient to determine the origin of optical "hot spots" within multi-particle aggregates.

Original languageEnglish
Title of host publicationPlasmonics
Subtitle of host publicationMetallic Nanostructures and their Optical Properties IV
Publication statusPublished - 2006
Externally publishedYes
EventPlasmonics: Metallic Nanostructures and their Optical Properties IV - San Diego, CA, United States
Duration: 2006 Aug 132006 Aug 16

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherPlasmonics: Metallic Nanostructures and their Optical Properties IV
Country/TerritoryUnited States
CitySan Diego, CA


  • Nanomaterials
  • Nanorod
  • Nonlinear optical
  • Single molecule
  • Ultrafast optical

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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