Nonlinear optical properties of metal and semiconductor nanoparticles

Aine M. Whelan, Sakina Benrezzak, Margaret E. Brennan, John M. Kelly, Werner J. Blau

Research output: Contribution to journalConference articlepeer-review

Abstract

The synthesis of metal (Au,Ag) and semiconductor (PbS) nanoparticles of specific size and morphology is reported. The shape of PbS nanoparticles has been varied from spherical to oval to cubic, by use of poly(vinyl alcohol) (PVA), DNA and ethylene glycol as stabilisers respectively. For the first time, a seeding method has been used to successfully prepare PVA stabilised gold and silver nanoparticles. Characterisation of the third order optical nonlinearity of the nanoparticles has been carried out using the Z-scan technique with values of Im Χ(3) as large as 10-10. Modulation of the magnitude of the nonlinear optical response with morphology in the case of the PbS nanoparticles is presented.

Original languageEnglish
Pages (from-to)1257-1264
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4876
Issue number2
DOIs
Publication statusPublished - 2002
EventOpto-Ireland 2002: Optics and Photonics Technologies and Applications - Galway, Ireland
Duration: 5 Sep 20026 Sep 2002

Keywords

  • Morphology
  • Nanoparticles
  • Nonlinear optics

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