Efficiency and scalability of dielectric resonator antennas at optical frequencies

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dc.contributor.authorZou, L.
dc.contributor.authorWithayachumnankul, W.
dc.contributor.authorShah, C.
dc.contributor.authorMitchell, A.
dc.contributor.authorKlemm, M.
dc.contributor.authorBhaskaran, M.
dc.contributor.authorSriram, S.
dc.contributor.authorFumeaux, C.
dc.date.issued2014
dc.description.abstractDielectric 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.
dc.description.statementofresponsibilityLongfang Zou, Withawat Withayachumnankul, Charan M. Shah, Arnan Mitchell, Maciej Klemm, Madhu Bhaskaran, Sharath Sriram and Christophe Fumeaux
dc.identifier.citationIEEE Photonics Journal, 2014; 6(4):4600110-1-4600110-10
dc.identifier.doi10.1109/JPHOT.2014.2337891
dc.identifier.issn1943-0655
dc.identifier.issn1943-0647
dc.identifier.orcidWithayachumnankul, W. [0000-0003-1155-567X]
dc.identifier.orcidFumeaux, C. [0000-0001-6831-7213]
dc.identifier.urihttp://hdl.handle.net/2440/84488
dc.language.isoen
dc.publisherIEEE
dc.relation.granthttp://purl.org/au-research/grants/arc/DP1092717
dc.relation.granthttp://purl.org/au-research/grants/arc/DP110100262
dc.relation.granthttp://purl.org/au-research/grants/arc/LE100100215
dc.relation.granthttp://purl.org/au-research/grants/arc/FT100100585
dc.rights© 2014 IEEE
dc.source.urihttps://doi.org/10.1109/jphot.2014.2337891
dc.titleEfficiency and scalability of dielectric resonator antennas at optical frequencies
dc.typeJournal article
pubs.publication-statusPublished

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