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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Short range plasmon resonators probed by photoemission electron microscopy
Ludovic Douillard1, Fabrice Charra, Zbigniew Korczak
1Commissariat à l'Energie Atomique Saclay Direction des Sciences de la Matière-Institut Rayonnement Matière de Saclay-Service de Physique et Chimie des Surfaces et Interfaces, F-91191 Gif sur Yvette, France. ludovic.douillard@cea.fr
Nano Letters
|February 22, 2008
Summary
Researchers studied short-range surface plasmon polaritons in gold nanorods. Specific rod lengths showed distinct resonance patterns, explained by a model involving half-wavelength multiples.
Area of Science:
- Plasmonics
- Nanophotonics
- Materials Science
Background:
- Surface plasmon polaritons (SPPs) are crucial for nanoscale light manipulation.
- Understanding SPP behavior in nanostructures is key for optical device development.
Purpose of the Study:
- To investigate short-range surface plasmon (SRSP) resonators at the nanometer scale.
- To characterize the resonant behavior of gold nanorods with varying lengths.
Main Methods:
- Microfabrication of gold nanorods (30 nm diameter).
- Probing nanorods using photoemission electron microscopy (PEEM) under direct laser excitation.
Main Results:
- Observed resonances with multiple lobes at specific nanorod lengths.
- Analytical model demonstrated that successive resonant lengths differ by multiples of half the SPP wavelength.
Conclusions:
- Established a relationship between nanorod length and SRSP resonance modes.
- Validated the analytical model for predicting SPP resonator behavior.
