Optical antenna of comb-shaped split ring architecture for increased field localization in NIR and MIR

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Kilic V. T., Erturk V. B., Demir H. V.

OPTICS EXPRESS, vol.21, no.24, pp.29455-29461, 2013 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 21 Issue: 24
  • Publication Date: 2013
  • Doi Number: 10.1364/oe.21.029455
  • Journal Name: OPTICS EXPRESS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.29455-29461
  • Abdullah Gül University Affiliated: Yes

Abstract

We propose and demonstrate novel designs of optical antennas based on comb-shaped split ring architecture that display multi resonance field intensity enhancement spectrum. These nanoantennas achieve substantially increased field localization at longer wavelengths than that of a single or an array of dipoles with the same side length. With these optical antennas, localizing near infrared (NIR) and mid infrared (MIR) lights within a region of tens of nanometers at an intensity enhancement level of the order of thousands of magnitude can be accomplished. (C)2013 Optical Society of America