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Updated: Jun 25, 2026

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

Published on: January 3, 2016

Nonlocal and Nonlinear Plasmonics in Atomically Thin Heterostructures.

Line Jelver¹, Joel D Cox^1,2

¹POLIMA─Center for Polariton-driven Light-Matter Interactions, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark.

|June 23, 2026

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Nonlocal effects in two-dimensional (2D) heterostructures enable strong plasmon-assisted optical nonlinearity. Atomistic simulations reveal how geometry and carrier density tune harmonic generation for advanced nonlinear nanophotonics.

Area of Science:

Nanophotonics
Materials Science
Quantum Optics

Background:

Atomically thin materials exhibit unique plasmonic properties.
Optical nonlocality in plasmons often leads to increased losses.
Two-dimensional (2D) materials offer extreme optical confinement for light-matter interactions.

Purpose of the Study:

Investigate nonlocal effects mediating optical nonlinearity in 2D heterostructures.
Explore the role of symmetry and inter-ribbon coupling in harmonic generation.
Establish 2D heterostructures as a platform for tunable nonlinear nanophotonics.

Main Methods:

Atomistic simulations capturing quantum finite-size and nonlocal effects.
Analysis of nonlinear plasmonic response in graphene and phosphorene nanoribbon dimers.

Keywords:

high-harmonic generation nanophotonics nonlinear optics nonlocal electrodynamics plasmons quantum plasmonics

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Investigating harmonic generation in perturbative and high-harmonic regimes.

Main Results:

Nonlocal effects were shown to mediate strong plasmon-assisted optical nonlinearity.
Inter-ribbon plasmon hybridization was induced by tuning geometry and carrier density.
Impact of hybridization on inversion symmetry and even-ordered nonlinear processes (e.g., second-harmonic generation) was demonstrated.

Conclusions:

Design principles for active and passive tuning of nonlinear plasmonic effects were revealed.
Selective enhancement of specific harmonic processes is achievable.
2D heterostructures provide a versatile platform for nonlinear nanophotonics.