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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 11 — Jun. 2, 2014
  • pp: 13263–13268

Radiation pattern of plasmonic nano-antennas in a homogeneous medium

Takafumi Sugita, Kaori Yanazawa, Satoshi Maeda, Holger F. Hofmann, and Yutaka Kadoya  »View Author Affiliations

Optics Express, Vol. 22, Issue 11, pp. 13263-13268 (2014)

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Radiation patterns from plasmonic nano-antennas formed on a glass substrate were investigated using index-matching oils. It was confirmed that the pattern from single nano-antennas for various cases of index-mismatching between the substrate and the oil is explained well by the patterns of infinitesimal electric dipoles. We found that for an angular resolution of 2°, the index mismatch must be smaller than 0.001 to realize isotropic radiation. By using the appropriate condition, the radiation patterns of nano Yagi-Uda antennas in a quasi-homogeneous medium were obtained experimentally.

© 2014 Optical Society of America

OCIS Codes
(240.0240) Optics at surfaces : Optics at surfaces
(350.4238) Other areas of optics : Nanophotonics and photonic crystals
(250.5403) Optoelectronics : Plasmonics

ToC Category:

Original Manuscript: February 12, 2014
Revised Manuscript: May 10, 2014
Manuscript Accepted: May 15, 2014
Published: May 27, 2014

Takafumi Sugita, Kaori Yanazawa, Satoshi Maeda, Holger F. Hofmann, and Yutaka Kadoya, "Radiation pattern of plasmonic nano-antennas in a homogeneous medium," Opt. Express 22, 13263-13268 (2014)

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