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Updated: Jun 13, 2026
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Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
Published on: January 3, 2016
Nonlocal ponderomotive nonlinearity in plasmonics
Pavel Ginzburg1, Alex Hayat, Nikolai Berkovitch
1Department of Electrical Engineering, Technion, Haifa 32000, Israel. gpasha@tx.technion.ac.il
Optics Letters
|May 19, 2010
Summary
Surface plasmon polaritons exhibit inherent nonlinearity due to electron density depletion in metals. This leads to a predicted cutoff and vanishing group velocity for high-intensity surface plasmon polaritons.
Area of Science:
- Condensed matter physics
- Plasmonics
- Nonlinear optics
Background:
- Surface plasmon polaritons (SPPs) are electromagnetic waves confined to the interface between a dielectric and a metal.
- Understanding the nonlinear optical properties of SPPs is crucial for developing advanced photonic devices.
Purpose of the Study:
- To analyze the inherent nonlinearity of SPPs at a Fermi-Dirac metal-dielectric interface.
- To investigate the impact of high-intensity SPPs on their propagation characteristics.
Main Methods:
- Derivation of optical nonlinear coefficients based on electron density depletion.
- Calculation of dispersion relations for nonlinear SPP propagation.
Main Results:
- Optical nonlinear coefficients were derived and found to be comparable to experimental values for metals.
- A nonlinearity-induced cutoff and vanishing group velocity were predicted for high-intensity SPPs.
Conclusions:
- The study reveals an inherent nonlinearity in SPPs arising from electron density effects.
- The findings predict novel propagation behaviors for high-intensity SPPs, potentially enabling new applications in plasmonics.
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