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A comparative analysis of surface and bulk contributions to second-harmonic generation in centrosymmetric nanoparticles

Timbrell, Daniel; You, Jianwei; Kivshar, Yuri; Panoiu, NC

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Second-harmonic generation (SHG) from nanoparticles made of centrosymmetric materials provides an effective tool to characterize many important properties of photonic structures at the subwavelength scale. Here we study the relative contribution of surface and bulk effects to SHG for plasmonic and dielectric nanostructures made of centrosymmetric materials in both dispersive and non-dispersive regimes. Our calculations of the far-fields generated by the nonlinear surface and bulk currents...[Show more]

dc.contributor.authorTimbrell, Daniel
dc.contributor.authorYou, Jianwei
dc.contributor.authorKivshar, Yuri
dc.contributor.authorPanoiu, NC
dc.date.accessioned2020-04-17T01:52:39Z
dc.date.available2020-04-17T01:52:39Z
dc.identifier.issn2045-2322
dc.identifier.urihttp://hdl.handle.net/1885/203230
dc.description.abstractSecond-harmonic generation (SHG) from nanoparticles made of centrosymmetric materials provides an effective tool to characterize many important properties of photonic structures at the subwavelength scale. Here we study the relative contribution of surface and bulk effects to SHG for plasmonic and dielectric nanostructures made of centrosymmetric materials in both dispersive and non-dispersive regimes. Our calculations of the far-fields generated by the nonlinear surface and bulk currents reveal that the size of the nanoparticle strongly influences the amount and relative contributions of the surface and bulk SHG effects. Importantly, our study reveals that, whereas for plasmonic nanoparticles the surface contribution is always dominant, the bulk and surface SHG effects can become comparable for dielectric nanoparticles, and thus they both should be taken into account when analyzing nonlinear optical properties of all-dielectric nanostructures.
dc.description.sponsorshipAuthors acknowledge fnancial support from the European Research Council (ERC) (Grant no. ERC-2014- CoG-648328), UK’s Royal Society–International Exchanges Scheme, and Australian Research Council.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherNature Publishing Group
dc.rights© The Author(s) 2018
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.sourceScientific Reports
dc.titleA comparative analysis of surface and bulk contributions to second-harmonic generation in centrosymmetric nanoparticles
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume8
dc.date.issued2018
local.identifier.absfor020604 - Quantum Optics
local.identifier.ariespublicationu4485658xPUB2231
local.publisher.urlhttps://www.nature.com/
local.type.statusPublished Version
local.contributor.affiliationTimbrell, Daniel, UCL
local.contributor.affiliationYou, Jianwei, UCL
local.contributor.affiliationKivshar, Yuri, College of Science, ANU
local.contributor.affiliationPanoiu, NC, University College London
local.bibliographicCitation.issue3586
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage9
local.identifier.doi10.1038/s41598-018-21850-8
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2019-11-25T07:53:33Z
local.identifier.scopusID2-s2.0-85043290445
local.identifier.thomsonID000426045700007
dcterms.accessRightsOpen Access
dc.provenanceThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Te images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
dc.rights.licenseCreative Commons license
CollectionsANU Research Publications

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