Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/84488
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Type: Journal article
Title: Efficiency and scalability of dielectric resonator antennas at optical frequencies
Author: Zou, L.
Withayachumnankul, W.
Shah, C.
Mitchell, A.
Klemm, M.
Bhaskaran, M.
Sriram, S.
Fumeaux, C.
Citation: IEEE Photonics Journal, 2014; 6(4):4600110-1-4600110-10
Publisher: IEEE
Issue Date: 2014
ISSN: 1943-0655
1943-0647
Statement of
Responsibility: 
Longfang Zou, Withawat Withayachumnankul, Charan M. Shah, Arnan Mitchell, Maciej Klemm, Madhu Bhaskaran, Sharath Sriram and Christophe Fumeaux
Abstract: Dielectric resonators have been foreseen as a pathway for the realization of highly efficient nanoantennas and metamaterials at optical frequencies. In this paper, we study the resonant behavior of dielectric nanocylinders located on a metal plane, which in combination create dielectric resonator antennas operating in reflection mode. By implementing appropriate resonator models, the field distributions, the scaling behavior, and the efficiency of dielectric resonator antennas are studied across the spectrum from the microwave toward visible frequency bands. Numerical results confirm that a radiation efficiency above 80% can be retained up to the near-infrared with metal-backed dielectric resonators. This paper establishes fundamental knowledge toward development of high efficiency dielectric resonator antennas and reflection metasurfaces at optical frequencies. These dielectric resonators can be incorporated as basic elements in emerging applications, e.g., flat optical components, quantum dot emitters, and subwavelength sensors.
Rights: © 2014 IEEE
RMID: 0020139332
DOI: 10.1109/JPHOT.2014.2337891
Grant ID: http://purl.org/au-research/grants/arc/DP1092717
http://purl.org/au-research/grants/arc/DP110100262
http://purl.org/au-research/grants/arc/LE100100215
http://purl.org/au-research/grants/arc/FT100100585
Appears in Collections:Electrical and Electronic Engineering publications

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