Ultrafast near-field microscope imaging of electron and phonon relaxation in single gold nanoparticle

K. Imura*, T. Nagahara, H. Okamoto

*Corresponding author for this work

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

Abstract

We investigated near-field optical properties of single gold nanorods with spatial resolution down to 50 nm. Gold nanorods show transverse and longitudinal surface plasmon resonances in visible and near-infrared region, respectively. Transmission images observed near the resonances agree qualitatively with calculated electromagnetic local density of states, and are reflected by spatial characteristics of plasmon eigenfunctions. Ultrafast temporal responses of local density of states have been imaged by combining near-field microscope with time-resolved technique. It has been found that dynamic behavior of surface plasmon in the center of the rod is different from that in the both ends.

Original languageEnglish
Title of host publicationInternational Conference on Ultrafast Phenomena, UP 2004
PublisherOptica Publishing Group (formerly OSA)
ISBN (Electronic)9781557528209
Publication statusPublished - 2004
Externally publishedYes
EventInternational Conference on Ultrafast Phenomena, UP 2004 - Niigata, Japan
Duration: 2004 Jul 252004 Jul 30

Publication series

NameOptics InfoBase Conference Papers

Conference

ConferenceInternational Conference on Ultrafast Phenomena, UP 2004
Country/TerritoryJapan
CityNiigata
Period04/7/2504/7/30

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials

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