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Alexander V Korovin1, Alexandre Douplik
1V.E. Lashkarev's Institute for Physics of Semiconductors, NAS of Ukraine, Kiev, Ukraine. korovin@isp.kiev.ua
Optics Letters
|November 2, 2012
Summary
Coating dielectric wedges with plasmon-carrying nanowires significantly enhances electric fields. Numerical simulations show up to 100x field intensity increase, enabling new photonic applications.
Area of Science:
- Nanophotonics
- Plasmonics
- Computational Electromagnetics
Background:
- Dielectric structures are crucial in photonics.
- Plasmonic nanostructures offer unique light-matter interaction properties.
- Controlling electric fields at the nanoscale is key for advanced optical devices.
Purpose of the Study:
- To numerically demonstrate electric field enhancement on dielectric wedges.
- To investigate the effect of coating with plasmon-carrying nanowires.
- To quantify the enhancement achieved through local plasmon excitation.
Main Methods:
- Finite-difference frequency-domain (FDFD) method for numerical simulations.
- Modeling plasmon excitation on silver nanowire coatings.
- Analyzing near-field electric field intensity.
Main Results:
- Efficient electric field enhancement observed on coated dielectric wedges.
- Silver nanowire coating leads to significant near-field intensity increase.
- Up to 100-fold electric field enhancement compared to uncoated wedges.
Conclusions:
- Plasmon-carrying nanowires effectively enhance electric fields on dielectric wedges.
- Local plasmon excitation is a viable mechanism for field intensification.
- This approach holds potential for applications in sensing and optical manipulation.
