Journal
OPTICS EXPRESS
Volume 19, Issue 22, Pages 21748-21753Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.19.021748
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Funding
- Defense Advanced Research Projects Agency (DARPA) by the Space and Naval Warfare Systems Center Pacific (SPAWAR) [N66001-10-1-4008]
- National Science Foundation
- Robert A. Welch Foundation [A-1261]
- European Communities [PIOF-GA-2009-235860]
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We explore the relationship between the near-field enhancement, absorption, and scattering spectra of localized plasmonic elements. A simple oscillator model including both internal and radiative damping is developed, and is shown to accurately capture the near-and far-field spectral features of linear optical antennas, including their phase response. At wavelengths away from the interband transitions of the metal, we expect the absorption of a plasmonic element to be red-shifted relative to the scattering, and the near-field to be red-shifted relative to both. (C) 2011 Optical Society of America
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