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Updated: Apr 19, 2026

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
Published on: January 3, 2016
Nonlinear photoluminescence spectrum of single gold nanostructures
Vanessa Knittel1, Marco P Fischer, Tjaard de Roo
1Department of Physics and Center for Applied Photonics, University of Konstanz , D-78457 Konstanz, Germany.
Abstract:
We investigate the multiphoton photoluminescence characteristics of gold nanoantennas fabricated from single crystals and polycrystalline films. By exciting these nanostructures with ultrashort pulses tunable in the near-infrared range, we observe distinct features in the broadband photoluminescence spectrum. By comparing antennas of different crystallinity and shape, we demonstrate that the nanoscopic geometry of plasmonic devices determines the shape of the emission spectra. Our findings rule out the contribution of the gold band structure in shaping the photoluminescence.
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