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Demonstration of the enhanced Purcell factor in all-dielectric structures

Krasnok, Alexander; Glybovski, Stanislav; Petrov, Mihail; Makarov, Sergey; Savelev, Roman; Belov, Pavel; Simovski, Constantin; Kivshar, Yuri

Description

The Purcell effect is usually described as a modification of the spontaneous decay rate in the presence of a resonator. In plasmonics, this effect is commonly associated with a large local-field enhancement in "hot spots" due to the excitation of surface plasmons. However, high-index dielectric nanostructures, which become the basis of all-dielectric nanophotonics, can not provide high values of the local-field enhancement due to larger radiation losses. Here, we demonstrate how to achieve a...[Show more]

dc.contributor.authorKrasnok, Alexander
dc.contributor.authorGlybovski, Stanislav
dc.contributor.authorPetrov, Mihail
dc.contributor.authorMakarov, Sergey
dc.contributor.authorSavelev, Roman
dc.contributor.authorBelov, Pavel
dc.contributor.authorSimovski, Constantin
dc.contributor.authorKivshar, Yuri
dc.date.accessioned2016-09-08T04:19:56Z
dc.identifier.issn0003-6951
dc.identifier.urihttp://hdl.handle.net/1885/108672
dc.description.abstractThe Purcell effect is usually described as a modification of the spontaneous decay rate in the presence of a resonator. In plasmonics, this effect is commonly associated with a large local-field enhancement in "hot spots" due to the excitation of surface plasmons. However, high-index dielectric nanostructures, which become the basis of all-dielectric nanophotonics, can not provide high values of the local-field enhancement due to larger radiation losses. Here, we demonstrate how to achieve a strong Purcell effect in all-dielectric nanostructures, and show theoretically that the Purcell factor can be increased by two orders of magnitude in a finite chain of silicon nanoparticles. Using the eigenmode analysis for an infinite chain, we demonstrate that the high Purcell factor regime is associated with a Van Hove singularity. We perform a proof-of-concept experiment for microwave frequencies and observe the 65-fold enhancement of the Purcell factor in a chain of 10 dielectric particles.
dc.description.sponsorshipThis work was supported by Russian Foundation for Basic Research (15-02-08957 A). The theoretical part of this work was supported by the Russian Science Foundation (Grant No. 16-19-10367) and the Australian Research Council.
dc.publisherAIP Publishing
dc.rights© 2016 American Institute of Physics.
dc.sourceApplied Physics Letters
dc.titleDemonstration of the enhanced Purcell factor in all-dielectric structures
dc.typeJournal article
local.identifier.citationvolume108
dc.date.issued2016-05-26
local.identifier.ariespublicationU3488905xPUB19323
local.publisher.urlhttps://www.aip.org/
local.type.statusPublished Version
local.contributor.affiliationKivshar, Y. S., Nonlinear Physics Center, Research School of Physics and Engineering, The Australian National University
local.bibliographicCitation.issue21
local.bibliographicCitation.startpage211105
local.identifier.doi10.1063/1.4952740
dcterms.accessRightsOpen Access
dc.provenancehttp://www.sherpa.ac.uk/romeo/issn/0003-6951/... "Publishers version/PDF may be used on author's personal website, arXiv, institutional website, institutional repository, funders designated repository or private forums on social academic network after 12 months embargo" from SHERPA/RoMEO site (as at 8/09/16). This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
CollectionsANU Research Publications

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