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Article: Compact Nonlinear Yagi-Uda Nanoantennas

TitleCompact Nonlinear Yagi-Uda Nanoantennas
Authors
Issue Date2016
PublisherNature Publishing Group: Open Access Journals. The Journal's web site is located at http://www.nature.com/srep/index.html
Citation
Scientific Reports, 2016, v. 6, p. 18872:1-9 How to Cite?
AbstractNanoantennas have demonstrated unprecedented capabilities for manipulating the intensity and direction of light emission over a broad frequency range. The directional beam steering offered by nanoantennas has important applications in areas including microscopy, spectroscopy, quantum computing, and on-chip optical communication. Although both the physical principles and experimental realizations of directional linear nanoantennas has become increasingly mature, angular control of nonlinear radiation using nanoantennas has not been explored yet. Here we propose a novel concept of nonlinear Yagi-Uda nanoantenna to direct second harmonic radiation from a metallic nanosphere. By carefully tuning the spacing and dimensions of two lossless dielectric elements, which function respectively as a compact director and reflector, the second harmonic radiation is deflected 90 degrees with reference to the incident light (pump) direction. This abnormal light-bending phenomenon is due to the constructive and destructive interference between the second harmonic radiation governed by a special selection rule and the induced electric dipolar and magnetic quadrupolar radiation from the two dielectric antenna elements. Simultaneous spectral and spatial isolation of scattered second harmonic waves from incident fundamental waves pave a new way towards nonlinear signal detection and sensing.
Persistent Identifierhttp://hdl.handle.net/10722/234574
ISSN
2015 Impact Factor: 5.228
2015 SCImago Journal Rankings: 2.073

 

DC FieldValueLanguage
dc.contributor.authorXiong, XY-
dc.contributor.authorJiang, L-
dc.contributor.authorSha, W-
dc.contributor.authorLo, YH-
dc.contributor.authorChew, WC-
dc.date.accessioned2016-10-14T13:47:47Z-
dc.date.available2016-10-14T13:47:47Z-
dc.date.issued2016-
dc.identifier.citationScientific Reports, 2016, v. 6, p. 18872:1-9-
dc.identifier.issn2045-2322-
dc.identifier.urihttp://hdl.handle.net/10722/234574-
dc.description.abstractNanoantennas have demonstrated unprecedented capabilities for manipulating the intensity and direction of light emission over a broad frequency range. The directional beam steering offered by nanoantennas has important applications in areas including microscopy, spectroscopy, quantum computing, and on-chip optical communication. Although both the physical principles and experimental realizations of directional linear nanoantennas has become increasingly mature, angular control of nonlinear radiation using nanoantennas has not been explored yet. Here we propose a novel concept of nonlinear Yagi-Uda nanoantenna to direct second harmonic radiation from a metallic nanosphere. By carefully tuning the spacing and dimensions of two lossless dielectric elements, which function respectively as a compact director and reflector, the second harmonic radiation is deflected 90 degrees with reference to the incident light (pump) direction. This abnormal light-bending phenomenon is due to the constructive and destructive interference between the second harmonic radiation governed by a special selection rule and the induced electric dipolar and magnetic quadrupolar radiation from the two dielectric antenna elements. Simultaneous spectral and spatial isolation of scattered second harmonic waves from incident fundamental waves pave a new way towards nonlinear signal detection and sensing.-
dc.languageeng-
dc.publisherNature Publishing Group: Open Access Journals. The Journal's web site is located at http://www.nature.com/srep/index.html-
dc.relation.ispartofScientific Reports-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleCompact Nonlinear Yagi-Uda Nanoantennas-
dc.typeArticle-
dc.identifier.emailXiong, XY: xyxiong@hku.hk-
dc.identifier.emailJiang, L: jianglj@hku.hk-
dc.identifier.emailSha, W: shawei@hku.hk-
dc.identifier.emailLo, YH: yatheilo@hku.hk-
dc.identifier.emailChew, WC: wcchew@hku.hk-
dc.identifier.authorityJiang, L=rp01338-
dc.identifier.authoritySha, W=rp01605-
dc.identifier.authorityChew, WC=rp00656-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1038/srep18872-
dc.identifier.scopuseid_2-s2.0-84954541565-
dc.identifier.hkuros269501-
dc.identifier.volume6-
dc.identifier.spage18872:1-
dc.identifier.epage9-
dc.publisher.placeUnited Kingdom-

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