Journal
PHYSICAL REVIEW LETTERS
Volume 102, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.203904
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Funding
- NWO
- EC
- NANONED
- FOM
- Chemische Wetenschappen of NWO and Stichting Shell Research
- European Community under the Marie Curie Scheme [MEST-CT-2005-021000]
- [FP6/2003/IST/2-511616]
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We show with both experiment and calculation that highly confined surface plasmon polaritons can be efficiently excited on metallic nanowires through the process of mode transformation. One specific mode in a metallic waveguide is identified that adiabatically transforms to the confined nanowire mode as the waveguide width is reduced. Phase- and polarization-sensitive near-field investigation reveals the characteristic antisymmetric polarization nature of the mode and explains the coupling mechanism.
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