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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 1 — Jan. 4, 2010
  • pp: 123–133

An optical reflectarray nanoantenna: The concept and design

Akram Ahmadi, Shabnam Ghadarghadr, and Hossein Mosallaei  »View Author Affiliations

Optics Express, Vol. 18, Issue 1, pp. 123-133 (2010)

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This paper presents the concept and design of a reflectarray nanoantenna at optical frequencies whose elements are nano-sized concentric spherical particles with the core made of ordinary dielectrics and the shell made of a plasmonic material. Modeling approaches based on finite difference time domain (FDTD) numerical method and dipole-modes scattering theory are used to characterize and tune the reflectarray design. A 6×6 elements reflectarray nanoantenna operating at wavelength 357.1nm with narrow beamwidth is presented, and its scanned radiation characteristics for 15° and 30° are demonstrated.

© 2010 Optical Society of America

OCIS Codes
(230.0230) Optical devices : Optical devices
(290.0290) Scattering : Scattering

ToC Category:
Optical Devices

Original Manuscript: October 20, 2009
Revised Manuscript: December 9, 2009
Manuscript Accepted: December 10, 2009
Published: December 22, 2009

Akram Ahmadi, Shabnam Ghadarghadr, and Hossein Mosallaei, "An optical reflectarray nanoantenna: The concept and design," Opt. Express 18, 123-133 (2010)

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