Ultrafast optical nonlinearities of plasmons in single gold nanorods

Matthew Pelton, Mingzhao Liu, Sungnam Park, Norbert Scherer, Philippe Guyot-Sionnest

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


Excitation of plasmons in a metal nanoparticle leads to localization of electromagnetic fields within the particle, which is expected to result in strong optical nonlinearities. We study ultrafast nonlinearities in optical scattering from single gold nanorods under resonant excitation at the plasmon frequency, and observe changes of as much as 20% in the scattering cross section over the 20-fs laser pulse duration. Unexpectedly, the magnitude of the ultrafast nonlinearity is the same as that due to heating of conduction electrons in the metal.

Original languageEnglish
Article number59270Z
Pages (from-to)1-11
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2005
Externally publishedYes
EventPlasmonics: Metallic Nanostructures and Their Optical Properties III - San Diego, CA, United States
Duration: 2005 Jul 312005 Aug 3


  • Nanoparticles
  • Nonlinear optics
  • Plasmons

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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