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

PLASMON RESONANCE 0103 physical sciences NANOPARTICLES ENHANCED RAMAN-SCATTERING 02 engineering and technology REFRACTIVE-INDEX 0210 nano-technology NANOSTRUCTURES 01 natural sciences
DOI: 10.1007/s00339-018-1615-4 Publication Date: 2018-02-05T01:33:32Z
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.
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