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Updated: Feb 14, 2026
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Photodeposition of Pd onto Colloidal Au Nanorods by Surface Plasmon Excitation
Published on: August 15, 2019
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Transmission/reflection behaviors of surface plasmons at an interface between two plasmonic systems
Fuxin Guan1, Shulin Sun2, Shaojie Ma1
1Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education) and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, People's Republic of China.
Summary
This study investigates surface plasmon polariton (SPP) reflection at interfaces between plasmonic materials. A new analytical method accurately describes SPP reflection, improving upon existing empirical formulas for broader applications.
Area of Science:
- Photonics and Nanophotonics
- Condensed Matter Physics
- Electromagnetism
Background:
- Surface plasmon polaritons (SPPs) are crucial for nanoscale light manipulation.
- Understanding SPP behavior at interfaces between plasmonic media is essential but incomplete.
- Existing models for SPP reflection lack comprehensive applicability.
Purpose of the Study:
- To systematically investigate the transmission and reflection properties of SPPs at interfaces of two plasmonic media.
- To develop a theoretical framework for analyzing SPP behavior in complex plasmonic structures.
- To derive accurate analytical formulas for SPP reflection coefficients.
Main Methods:
- Employing the mode expansion method (MEM) to analyze a model system of two joined superlattices.
- Utilizing superlattices composed of periodic dielectric and plasmonic slabs.
- Validating MEM calculations through comparison with full-wave simulations.
Main Results:
- Uncovered complex physics governing SPP reflections at generic plasmonic interfaces.
- Derived several analytical formulas from the MEM to quantitatively describe SPP reflections.
- Demonstrated that the derived formulas have wider applicable regions than previous empirical ones.
Conclusions:
- The mode expansion method provides a robust framework for studying SPP reflection at plasmonic interfaces.
- The newly derived analytical formulas offer improved accuracy and broader applicability for predicting SPP reflection.
- This work advances the fundamental understanding of SPP interactions in complex plasmonic systems.
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