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The dark side of plasmonics
- Source :
- Nano letters. 13(8)
- Publication Year :
- 2013
-
Abstract
- Plasmonic dark modes are pure near-field modes that can arise from the plasmon hybridization in a set of interacting nanoparticles. When compared to bright modes, dark modes have longer lifetimes due to their lack of a net dipole moment, making them attractive for a number of applications. We demonstrate the excitation and optical detection of a collective dark plasmonic mode from individual plasmonic trimers. The trimers consist of triangular arrangements of gold nanorods, and due to this symmetry, the lowest-energy dark plasmonic mode can interact with radially polarized light. The experimental data presented confirm the excitation of this mode, and its assignment is supported with an electrostatic approximation wherein these dark modes are described in terms of plasmon hybridization. The strong confinement of energy in these modes and their associated near fields hold great promise for achieving strong coupling to single photon emitters.
- Subjects :
- Physics
Photon
business.industry
Mechanical Engineering
Surface plasmon
Physics::Optics
Bioengineering
Near and far field
General Chemistry
Condensed Matter Physics
Molecular physics
Dipole
Physics::Atomic and Molecular Clusters
Optoelectronics
Radial polarization
General Materials Science
Nanorod
business
Plasmon
Excitation
Subjects
Details
- ISSN :
- 15306992
- Volume :
- 13
- Issue :
- 8
- Database :
- OpenAIRE
- Journal :
- Nano letters
- Accession number :
- edsair.doi.dedup.....375ae05929b29909d05c10b2237d6fb7