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TVT, 2016, Volume 54, Issue 4, Pages 500–507 (Mi tvt5203)  

This article is cited in 1 scientific paper (total in 1 paper)

Plasma Investigations

Regularities of nanofocusing of a surface plasmon wave near the nanoapex of a metallic microtip

A. B. Petrin

Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow

Abstract: Nanofocusing of the electromagnetic energy of the optical frequency range into a nanosized spatial area in the vicinity of the nanoapex of a metallic microtip with a radius of curvature of the apex on the order of a few nanometers, which occurs when the surface plasmon wave converges to the tip, is studied. The metal boundary near the apex is considered approximately as the surface of the paraboloid of revolution. It is shown that, in the approximation of the absence of losses in the metal, the electric field distribution near the nanoapex is determined only by its radius of curvature and the frequency of the plasmon wave normalized to the plasma frequency of the metal. The impact of absorption in the metal on this distribution is considered. For microtips made of highly conductive materials, the absorption in the metal in the optical frequency range is shown to have almost no influence on the size of the focal nanoregion.

Funding Agency Grant Number
Ministry of Education and Science of the Russian Federation 14.579.21.0066
This study was supported by the Ministry of Education and Science of the Russian Federation within the Research Project ``Development of Electro-Optical Gradient Thin-Film Structures for Precision Optics and Analytical Instrument Engineering'' (agreement on grant no. 14.579.21.0066, October 23, 2014; unique identification number RFMEFI 57914 X 0066).


DOI: https://doi.org/10.7868/S0040364416040189

Full text: PDF file (1247 kB)
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English version:
High Temperature, 2016, 54:4, 475–482

Bibliographic databases:

UDC: 533.9.01.15
Received: 07.11.2014
Accepted:13.10.2015

Citation: A. B. Petrin, “Regularities of nanofocusing of a surface plasmon wave near the nanoapex of a metallic microtip”, TVT, 54:4 (2016), 500–507; High Temperature, 54:4 (2016), 475–482

Citation in format AMSBIB
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\crossref{https://doi.org/10.7868/S0040364416040189}
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