Departmental Papers (ESE)

Abstract

Here we explore the radiation features of optical nanoantennas, analyzing the concepts of optical input impedance, optical radiation resistance, impedance matching, and loading of plasmonic nanodipoles. We discuss how the concept of antenna impedance may be applied to optical frequencies and how its quantity may be properly defined and evaluated. We exploit these concepts in the optimization of nanoantenna loading by optical nanocircuit elements, extending classic concepts of radio-frequency antenna theory to the visible regime for the proper design and matching of plasmonic nanoantennas.

Document Type

Journal Article

Date of this Version

July 2008

Comments

Copyright American Physical Society. Reprinted from Physical Review Letters, Volume 101, Article 043901, July 2008, 4 pages.
Publisher URL: http://dx.doi.org/10.1103/PhysRevLett.101.043901

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Date Posted: 17 September 2008

This document has been peer reviewed.