Title
Image resolution of surface-plasmon-mediated near-field focusing with planar metal films in three dimensions using finite-linewidth dipole sources
Abbreviated Journal Title
Phys. Rev. B
Keywords
NEGATIVE REFRACTION; ELECTROMAGNETIC-WAVES; INDEX MATERIALS; Physics, Condensed Matter
Abstract
We study the role of surface plasmons in the near-field focusing of a finite-linewidth point dipole by a planar silver film using three-dimensional finite element calculations. We find that the intensity distribution in the image plane at a distance of 60 nm from the source is narrowed by a factor of 1.4 in the presence of a 30-nm-thick silver film. The lateral field components are found to be focused significantly better. We show that the difference is caused by unavoidable stray fields normal to the lens surface due to the interface charge distribution induced by the presence of surface plasmons.
Journal Title
Physical Review B
Volume
69
Issue/Number
4
Publication Date
1-1-2004
Document Type
Article
Language
English
First Page
5
WOS Identifier
ISSN
1098-0121
Recommended Citation
"Image resolution of surface-plasmon-mediated near-field focusing with planar metal films in three dimensions using finite-linewidth dipole sources" (2004). Faculty Bibliography 2000s. 4485.
https://stars.library.ucf.edu/facultybib2000/4485
Comments
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