Photonic nanojets with mesoscale high-index dielectric particles

Pacheco-Peña, Víctor; Beruete Díaz, Miguel

Publication:
Photonic nanojets with mesoscale high-index dielectric particles

dc.contributor.author	Pacheco-Peña, Víctor
dc.contributor.author	Beruete Díaz, Miguel
dc.contributor.department	Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren	eu
dc.contributor.department	Institute of Smart Cities - ISC	en
dc.contributor.department	Ingeniería Eléctrica, Electrónica y de Comunicación	es_ES
dc.date.accessioned	2019-02-26T14:34:35Z
dc.date.available	2019-02-26T14:34:35Z
dc.date.issued	2019
dc.description	This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in V. Pacheco-Peña and M. Beruete. Photonic nanojets with mesoscale high-index dielectric particles. J. Appl. Phys.125, 084104 (2019). doi: 10.1063/1.5086175 and may be found at doi: http://dx.doi.org/10.1063/1.5086175.	en
dc.description.abstract	In this work, we demonstrate the ability of high-index dielectric particles immersed in air to generate photonic nanojets with extreme resolution (∼0.06λ0). Both 2D (cylindrical) and 3D (spherical) particles are analyzed, and their profile is truncated using the Weierstrass formulation for solid immersion lenses to produce a photonic nanojet at the output surface under plane wave illumination. Their focusing capability is evaluated in terms of the spatial resolution achieving subwavelength values of ∼0.14λ0 and ∼0.06λ0 for a truncated cylinder and sphere, respectively. The capability of the truncated sphere to enhance the backscattering produced by two small metallic spherical scatterers placed near the photonic nanojet is evaluated by using a scanning-probe microscopy configuration. The imaging capabilities of this technique are also analyzed by moving the metallic spheres in the transversal plane where the photonic nanojet is produced. The results presented here improve greatly the typical resolution of photonic nanojets generated with dielectric particles with a small index contrast. In addition, the high-index material allows using mesoscale particles, leading to a more compact setup. These results may find applications in areas such as microscopy, imaging, and sensing devices where a subwavelength resolution below the diffraction limit is needed.	en
dc.description.sponsorship	V.P.-P. is supported by the Newcastle University (Newcastle University Research Fellow). M.B. acknowledges the support by the Spanish Ministerio de Economía y Competitividad under Contract No. TEC2014-51902-C2-2-R.	en
dc.format.extent	11 p.
dc.format.mimetype	application/pdf	en
dc.identifier.doi	10.1063/1.5086175
dc.identifier.issn	0021-8979 (Print)
dc.identifier.issn	1089-7550 (Electronic)
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/32416
dc.language.iso	eng	en
dc.publisher	AIP Publishing	en
dc.relation.ispartof	Journal of Applied Physics, 125, 084104 (2019)	en
dc.relation.projectID	info:eu-repo/grantAgreement/MINECO//TEC2014-51902-C2-2-R/ES/	en
dc.relation.publisherversion	https://doi.org/10.1063/1.5086175
dc.rights	© 2019 Author(s)	en
dc.rights.accessRights	Acceso abierto / Sarbide irekia	es
dc.rights.accessRights	info:eu-repo/semantics/openAccess	en
dc.subject	Photonic nanojets	en
dc.subject	Dielectric materials	en
dc.subject	Transition metal oxides	en
dc.title	Photonic nanojets with mesoscale high-index dielectric particles	en
dc.type	Artículo / Artikulua	es
dc.type	info:eu-repo/semantics/article	en
dc.type.version	Versión aceptada / Onetsi den bertsioa	es
dc.type.version	info:eu-repo/semantics/acceptedVersion	en
dspace.entity.type	Publication
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