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dc.contributor.authorZheludev, Nikolay I.en_US
dc.contributor.authorYuan, Guanghuien_US
dc.identifier.citationZheludev, N. I. & Yuan, G. (2022). Optical superoscillation technologies beyond the diffraction limit. Nature Reviews Physics, 4, 16-32.
dc.description.abstractOptical superoscillations are rapid, subwavelength spatial variations of the intensity and phase of light, occurring in complex electromagnetic fields formed by the interference of several coherent waves. The discovery of superoscillations stimulated a revision of the limits of classical electromagnetism — in particular, the studies of phenomena such as unlimitedly small energy hotspots, phase singularities, energy backflow, anomalously high wavevectors and their intriguing similarities to the evanescent plasmonic fields on metals. In recent years, the understanding of superoscillatory light has led to the development of superoscillatory lensing, imaging and metrology technologies. Dielectric, metallic and metamaterial nanostructured superoscillatory lenses have been introduced that are able to create hotspots smaller than allowed by conventional lenses. Far-field, label-free, non-intrusive deeply subwavelength super-resolution imaging and metrology techniques that exploit high light localization and rapid variation of phase in superoscillatory fields have also been developed, including new approaches based on artificial intelligence. We review the fundamental properties of superoscillatory optical fields and examine emerging technological applications.en_US
dc.description.sponsorshipAgency for Science, Technology and Research (A*STAR)en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.relationSERC A1685b0005en_US
dc.relation.ispartofNature Reviews Physicsen_US
dc.rights© 2021 Springer Nature Limited. All rights reserved. This paper was published in Nature Reviews Physics and is made available with permission of Springer Nature Limited.en_US
dc.subjectScience::Physics::Optics and lighten_US
dc.titleOptical superoscillation technologies beyond the diffraction limiten_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.contributor.researchCentre for Disruptive Photonic Technologies (CDPT)en_US
dc.contributor.researchThe Photonics Instituteen_US
dc.description.versionSubmitted/Accepted versionen_US
dc.subject.keywordsElectromagnetic Fieldsen_US
dc.subject.keywordsCoherent Wavesen_US
dc.description.acknowledgementThis work was supported by the Engineering and Physical Sciences Research Council UK (grant nos. EP/M009122/1 and EP/T02643X/1), the Singapore National Research Foundation (grant no. NRF-CRP23-2019-0006), the Singapore Ministry of Education (grant no. MOE2016-T3-1-006) and the Agency for Science, Technology and Research (A*STAR) Singapore (grant no. SERC A1685b0005). G.Y. is also supported by the National Innovative Talents Program of China.en_US
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