Superfocusing of surface polaritons in the conical structure
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- 15 April 2000
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 87 (8) , 3785-3788
- https://doi.org/10.1063/1.372414
Abstract
It is shown that at the propagation of a surface polariton through a pointed cone its wavelength decreases to zero as it approaches the edge of the cone. As a result, the polariton is focused in a very small region and the strengths of the wave fields anomalously increase. The phenomenon could be used for creation of a scanning near-field optical microscope to investigate the nanometer-scale surface areas.Keywords
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