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Related Experiment Video

Updated: May 14, 2026

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
15:06

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Published on: January 3, 2016

Plasmon hybridization for enhanced nonlinear optical response.

Ghazal Hajisalem1, Aftab Ahmed, Yuanjie Pang

  • 1Department of Electrical and Computer Engineering, University of Victoria, BC, V8P5C2, Canada.

Optics Express
|February 8, 2013
PubMed
Summary
This summary is machine-generated.

Plasmon hybridization between silver nanoprisms and gold films significantly boosts optical second harmonic generation. This enhancement, observed through tuning spacer layers, shows promise for advanced nanophotonics applications.

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Area of Science:

  • Plasmonics
  • Nanophotonics
  • Nonlinear Optics

Background:

  • Plasmon resonance in metal nanoparticles is crucial for optical applications.
  • Optical second harmonic generation (SHG) is a key nonlinear optical process.
  • Controlling plasmon coupling is essential for enhancing nonlinear optical phenomena.

Purpose of the Study:

  • To investigate plasmon hybridization between silver nanoprisms and a thin gold film.
  • To tune plasmon resonance and enhance optical second harmonic generation (SHG).
  • To explore the impact of spacer layer thickness on SHG enhancement.

Main Methods:

  • Fabrication of silver nanoprisms on a thin gold film with varying spacer layers.
  • Experimental measurement of optical second harmonic generation.
  • Finite-difference time-domain (FDTD) simulations to model plasmon coupling and SHG.

Main Results:

  • Plasmon hybridization significantly enhances SHG by nearly three orders of magnitude.
  • Spacer layer thickness critically influences the SHG enhancement factor.
  • FDTD calculations show good agreement with experimental results for the enhancement factor.

Conclusions:

  • Plasmon hybridization is an effective strategy for tuning plasmon resonance and boosting SHG.
  • This approach offers a promising pathway for applications in multi-photon lithography and nonlinear sensing.
  • The study demonstrates precise control over nonlinear optical responses using tailored nanoparticle-film systems.