Near-field marking of gold nanostars by ultrashort pulsed laser irradiation: experiment and simulations

Soren H. Moller*, Joakim Vester-Petersen, Adnan Nazir, Emil H. Eriksen, Brian Julsgaard, Soren P. Madsen, Peter Balling

*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Abstract

Quantitative measurements of the electric near-field distribution of star-shaped gold nanoparticles have been performed by femtosecond laser ablation. Measurements were carried out on and off the plasmon resonance. A detailed comparison with numerical simulations of the electric fields is presented. Semi-quantitative agreement is found, with slight systematic differences between experimentally observed and simulated near-field patterns close to strong electric-field gradients. The deviations are attributed to carrier transport preceding ablation.

Original languageEnglish
Article number210
JournalApplied Physics A: Materials Science & Processing
Volume124
Issue2
Number of pages7
ISSN0947-8396
DOIs
Publication statusPublished - Feb 2018

Keywords

  • ENHANCED RAMAN-SCATTERING
  • PLASMON RESONANCE
  • REFRACTIVE-INDEX
  • NANOPARTICLES
  • NANOSTRUCTURES

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