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Overcoming the diffraction limit with high-index dielectric particles

Lookup NU author(s): Dr Victor Pacheco PenaORCiD


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In this communication, we propose and demonstrate the ability to produce photonic nanojets using high refractive index dielectric particles immersed in air. An extremely narrow focus is produced just at the output surface of the proposed 2D and 3D particles with a spatial resolution of ~0.14λ0 and ~0.06λ0 , respectively. In addition to the focusing performance, the imaging capabilities is also studied by introducing metallic spheres within the region of the photonic nanojet demonstrating that distances between objects as small as ~0.06λ0 can be distinguished with the proposed structures.

Publication metadata

Author(s): Pacheco-Peña V, Beruete M

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials 2019)

Year of Conference: 2019

Pages: 278-280

Print publication date: 14/11/2019

Online publication date: 14/11/2019

Acceptance date: 01/05/2019

Publisher: IEEE


DOI: 10.1109/MetaMaterials.2019.8900817

Library holdings: Search Newcastle University Library for this item

ISBN: 9781728104775