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Updated: May 29, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

The Goos-Hänchen effect for surface plasmon polaritons.

Felix Huerkamp¹, Tamara A Leskova, Alexei A Maradudin

¹Department of Physics and Astronomy and Institute for Surface and Interface Science, University of California, Irvine, CA 92697, USA. felix.huerkamp@uni-muenster.de

|September 22, 2011

Summary

Researchers observed a lateral displacement of surface plasmon polaritons at metal interfaces, analogous to the Goos-Hänchen effect. This phenomenon, sensitive to dielectric properties, shows potential for sensing surface modifications.

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Area of Science:

Condensed Matter Physics
Plasmonics
Optics

Background:

Surface plasmon polaritons (SPPs) are electromagnetic waves confined to the interface between a metal and a dielectric.
The interaction of SPPs with interfaces can lead to unique optical phenomena.
Understanding SPP reflection is crucial for developing novel optical devices and sensors.

Purpose of the Study:

To investigate the reflection of a surface plasmon polariton beam at a planar interface between two metals with different dielectric functions.
To analyze the lateral displacement of the reflected SPP beam as a function of incidence angle.
To explore the potential of this effect for sensing applications.

Main Methods:

Utilized an impedance boundary condition.
Employed numerical solutions of integral equations for scattering amplitudes.
Studied the reflection of SPP beams at varying angles of incidence.

Main Results:

Observed a significant lateral displacement of the reflected SPP beam when the incidence surface is optically denser (|ɛ2(ω)|≫|ɛ1(ω)|).
The displacement magnitude was found to be several times the wavelength of the incident beam.
This displacement is identified as the surface plasmon polariton analogue of the Goos-Hänchen effect.

Conclusions:

The observed lateral displacement effect is sensitive to the dielectric properties of the metal surfaces.
This sensitivity can be leveraged for sensing modifications in the dielectric environment of metal surfaces.
Potential applications include detecting atomic or molecular layer adsorption on metal surfaces.