Highly directive Fabry-Perot leaky-wave nanoantennas based on optical partially reflective surfaces

M. Lorente-Crespo, C. Mateo-Segura

Research output: Contribution to journalArticle

2 Citations (Scopus)
56 Downloads (Pure)

Abstract

Nanoantennas enhance the conversion between highly localized electromagnetic fields and far-field radiation. Here, we investigate the response of a nano-patch partially reflective surface backed with a silver mirror to an optical source embedded at the centre of the structure. Using full wave simulations, we demonstrate a two orders of magnitude increased directivity compared to the isotropic radiator, 50% power confinement to a 13.8° width beam and a ±16 nm bandwidth. Our antenna does not rely on plasmonic phenomena thus reducing non-radiative losses and conserving source coherence.

Original languageEnglish
Article number183104
JournalApplied Physics Letters
Volume106
Issue number18
Early online date5 May 2015
DOIs
Publication statusPublished - 2015

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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