Advanced Optical Programming of Individual Meta-Atoms Beyond the Effective Medium Approach

dc.bibliographicCitation.firstPage1901033eng
dc.bibliographicCitation.issue29eng
dc.bibliographicCitation.journalTitleAdvanced Materialseng
dc.bibliographicCitation.volume31eng
dc.contributor.authorMichel, Ann-Katrin U.
dc.contributor.authorHeßler, Andreas
dc.contributor.authorMeyer, Sebastian
dc.contributor.authorPries, Julian
dc.contributor.authorYu, Yuan
dc.contributor.authorKalix, Thomas
dc.contributor.authorLewin, Martin
dc.contributor.authorHanss, Julian
dc.contributor.authorDe Rose, Angela
dc.contributor.authorMaß, Tobias W.W.
dc.contributor.authorWuttig, Matthias
dc.contributor.authorChigrin, Dmitry N.
dc.contributor.authorTaubner, Thomas
dc.date.accessioned2021-12-03T08:02:25Z
dc.date.available2021-12-03T08:02:25Z
dc.date.issued2019
dc.description.abstractNanometer-thick active metasurfaces (MSs) based on phase-change materials (PCMs) enable compact photonic components, offering adjustable functionalities for the manipulation of light, such as polarization filtering, lensing, and beam steering. Commonly, they feature multiple operation states by switching the whole PCM fully between two states of drastically different optical properties. Intermediate states of the PCM are also exploited to obtain gradual resonance shifts, which are usually uniform over the whole MS and described by effective medium response. For programmable MSs, however, the ability to selectively address and switch the PCM in individual meta-atoms is required. Here, simultaneous control of size, position, and crystallization depth of the switched phase-change material (PCM) volume within each meta-atom in a proof-of-principle MS consisting of a PCM-covered Al–nanorod antenna array is demonstrated. By modifying optical properties locally, amplitude and light phase can be programmed at the meta-atom scale. As this goes beyond previous effective medium concepts, it will enable small adaptive corrections to external aberrations and fabrication errors or multiple complex functionalities programmable on the same MS. © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheimeng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/7613
dc.identifier.urihttps://doi.org/10.34657/6660
dc.language.isoengeng
dc.publisherWeinheim : Wiley-VCHeng
dc.relation.doihttps://doi.org/10.1002/adma.201901033
dc.relation.essn1521-4095
dc.rights.licenseCC BY-NC 4.0 Unportedeng
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/eng
dc.subject.ddc540eng
dc.subject.ddc660eng
dc.subject.otheractive metamaterialseng
dc.subject.otheradaptive opticseng
dc.subject.otherphase-change materialseng
dc.subject.otherprogrammable metasurfaceseng
dc.subject.otherresonance tuningeng
dc.titleAdvanced Optical Programming of Individual Meta-Atoms Beyond the Effective Medium Approacheng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccesseng
wgl.contributorDWIeng
wgl.subjectChemieeng
wgl.typeZeitschriftenartikeleng
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