Quantifying the radiation efficiency of nano antennas

Yuval Yifat; Zeev Iluz; Michal Eitan; Inbal Friedler; Yael Hanein; Amir Boag; Jacob Scheuer

doi:10.1063/1.3694278

Quantifying the radiation efficiency of nano antennas

Yuval Yifat, Zeev Iluz, Michal Eitan, Inbal Friedler, Yael Hanein, Amir Boag, Jacob Scheuer^*

^*Corresponding author for this work

School of Electrical Engineering

Tel Aviv University

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

The radiation efficiency of nano antennas is a critical parameter determining their suitability for various applications. To that end, the radiation efficiency of a single antenna is directly quantified using far-field measurements of the reflectance of an array comprising identical nano-antennas. Excellent agreement in terms of resonance frequencies, optical bandwidth, and scattering efficiency is found between the results of experimental measurements and finite element-based numerical analysis of scattering from Au nano-antenna arrays. Extremely high overall radiation efficiencies, exceeding 82%, are obtained. The high efficiency can facilitate the employment of such nano-antennas for applications in imaging, spectroscopy, and solar energy harvesting.

Original language	English
Article number	111113
Journal	Applied Physics Letters
Volume	100
Issue number	11
DOIs	https://doi.org/10.1063/1.3694278
State	Published - 12 Mar 2012

Funding

Funders	Funder number
Israeli DoD
Tel Aviv University

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title = "Quantifying the radiation efficiency of nano antennas",

abstract = "The radiation efficiency of nano antennas is a critical parameter determining their suitability for various applications. To that end, the radiation efficiency of a single antenna is directly quantified using far-field measurements of the reflectance of an array comprising identical nano-antennas. Excellent agreement in terms of resonance frequencies, optical bandwidth, and scattering efficiency is found between the results of experimental measurements and finite element-based numerical analysis of scattering from Au nano-antenna arrays. Extremely high overall radiation efficiencies, exceeding 82%, are obtained. The high efficiency can facilitate the employment of such nano-antennas for applications in imaging, spectroscopy, and solar energy harvesting.",

author = "Yuval Yifat and Zeev Iluz and Michal Eitan and Inbal Friedler and Yael Hanein and Amir Boag and Jacob Scheuer",

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AU - Iluz, Zeev

AU - Eitan, Michal

AU - Friedler, Inbal

AU - Hanein, Yael

AU - Boag, Amir

AU - Scheuer, Jacob

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Quantifying the radiation efficiency of nano antennas

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