High load sensitivity in wideband infrared dual-Vivaldi nanoantennas

Yuval Yifat, Zeev Iluz, Doron Bar-Lev, Michal Eitan, Yael Hanein, Amir Boag, Jacob Scheuer

Research output: Contribution to journalArticlepeer-review

Abstract

Dual-Vivaldi nanoantenna (DVA) arrays were designed, fabricated, and optically characterized in the infrared (IR) and visible regimes. The antenna arrays were characterized by measuring the scattered light at IR (1450-1640 nm) and visible (780 nm) spectral ranges. The radiation efficiency and the spectral response of the antennas were found to be in good agreement with numerical simulations. The results presented here demonstrate the extremely wideband nature of the DVAs and the strong impact of load at the antenna terminals on its scattering response. These properties, as well as their many degrees of freedom for design, render the DVAs excellent candidates for optical sensing applications.

Original languageEnglish
Pages (from-to)205-207
Number of pages3
JournalOptics Letters
Volume38
Issue number2
DOIs
StatePublished - 15 Jan 2013

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