Title
Surface-plasmon-assisted electromagnetic wave propagation
Abbreviated Journal Title
Phys. Chem. Chem. Phys.
Keywords
ENHANCED RAMAN-SCATTERING; SUBWAVELENGTH-DIAMETER SILICA; NEGATIVE; REFRACTION; DIFFRACTION-LIMIT; OPTICAL HYPERLENS; GUIDE; METAMATERIALS; SPECTROSCOPY; MOLECULES; INDEX; Chemistry, Physical; Physics, Atomic, Molecular & Chemical
Abstract
Using electrodynamics tools, we investigated the effect of surface plasmons on the propagation direction of electromagnetic waves around a spherical silver nanoparticle and nano-structured silver film. The studies showed that the calculated effective index of refraction of a spherical silver nanoparticle from the Kramers-Kronig transformation method may not represent the index of refraction of the system but is consistent with the Poynting vector (the energy flow) direction at the microscopic scale. Using a silver film composed of periodic triangular prisms, we numerically demonstrated that electromagnetic waves may propagate along different directions depending on the incident polarization direction. When the incident polarization is in the plane of incidence and the surface plasmons are excited, the refracted light ray propagates along the same side of the surface normal as the incident wave. When the incident polarization is perpendicular to the plane of incidence, the refracted light ray always propagates on the opposite side of the surface normal. The results show that a silver film composed of periodic nano-sized triangular prisms may be used as a filter to simultaneously generate two polarized light rays of orthogonal polarizations from one light source.
Journal Title
Physical Chemistry Chemical Physics
Volume
12
Issue/Number
39
Publication Date
1-1-2010
Document Type
Article
DOI Link
Language
English
First Page
12647
Last Page
12652
WOS Identifier
ISSN
1463-9076
Recommended Citation
"Surface-plasmon-assisted electromagnetic wave propagation" (2010). Faculty Bibliography 2010s. 975.
https://stars.library.ucf.edu/facultybib2010/975
Comments
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