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Updated: Oct 8, 2025

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
Dispersion of resonant modes in patch antenna lattices
This study reveals how localized surface plasmon resonances interact with propagating surface plasmon polaritons in metal-insulator-metal patches. Understanding this interplay is key for plasmonic device development.
Area of Science:
- Plasmonics
- Condensed Matter Physics
- Optical Metrology
Background:
- Surface plasmon polaritons (SPPs) are crucial for nanoscale light manipulation.
- Localized surface plasmon resonances (LSPRs) are fundamental to plasmonic devices.
- Understanding the coupling between SPPs and LSPRs is essential for advanced optical applications.
Purpose of the Study:
- To investigate the interplay between LSPRs and SPPs in a rectangular array of metal-insulator-metal (MIM) patches.
- To elucidate the nature of resonances and their coupling mechanisms.
- To provide detailed insights into plasmonic interactions within MIM structures.
Main Methods:
- Spectroscopic polar angle resolved Mueller matrix ellipsometry.
- Multiple azimuthal incidence measurements.
- Full-field modeling with plane-wave expansion.
Main Results:
- Identified fundamental LSPRs composed of oppositely propagating modes.
- Observed grating-coupled SPPs excited near diffracted orders in p-polarization.
- Demonstrated strong coupling between SPPs and LSPRs of similar symmetry.
- Showed suppression of SPPs by LSPRs of dissimilar symmetry.
Conclusions:
- Detailed understanding of LSPR-SPP interplay in MIM patches.
- LSPR modes are formed by counter-propagating waves.
- Grating-coupled SPPs are responsible for sharp resonances.
- Symmetry matching dictates the strength of coupling between SPPs and LSPRs.
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