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Babinet to the half: coupling of solid and inverse plasmonic structures
Mario Hentschel1, Thomas Weiss, Shahin Bagheri
14th Physics Institute and Research Center SCoPE, University of Stuttgart , Pfaffenwaldring 57, 70569 Stuttgart, Germany.
Nano Letters
|August 28, 2013
Summary
Researchers explored coupling plasmonic resonances in mixed solid-inverse metallic nanostructures. They found efficient coupling is possible with specific geometric conditions, enabling new structures and phenomena.
Area of Science:
- Plasmonics
- Nanophotonics
- Metamaterials
Background:
- Coupling of plasmonic resonances in solid-solid and inverse-inverse nanostructures is well-understood.
- Mixed solid-inverse plasmonic systems remain largely unexplored, with unclear coupling possibilities and prerequisites.
Purpose of the Study:
- Investigate the coupling of plasmonic resonances between solid and inverse metallic nanostructures.
- Identify geometric prerequisites for efficient coupling in mixed systems.
- Demonstrate novel applications of solid-inverse plasmonic coupling.
Main Methods:
- Theoretical investigation of plasmonic resonance coupling.
- Analysis of geometric parameters influencing coupling efficiency.
- Numerical simulations to validate findings and demonstrate applications.
Main Results:
- Efficient coupling between inverse and solid plasmonic resonances is achievable.
- Specific geometrical prerequisites for efficient coupling were identified.
- Demonstrated a novel solid-inverse plasmonic electromagnetically induced transparency (EIT) structure and a mixed chiral system.
- Symmetry breaking is crucial for coupling asymmetric structures, while symmetric structures couple readily.
Conclusions:
- This study significantly extends the understanding and toolkit for plasmonic coupling.
- Enables the emergence of novel phenomena in mixed solid-inverse plasmonic structures.
- Opens new avenues for designing advanced plasmonic devices and metamaterials.
