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Reconfigurable all-dielectric antenna-based metasurface driven by multipolar resonances
KTH, School of Engineering Sciences (SCI), Applied Physics, Laser Physics. Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China..
Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China..ORCID iD: 0000-0001-9344-6682
Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China..
Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Coll Opt Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China.;Westlake Univ, Westlake Inst Adv Study, Inst Adv Technol, Hangzhou 310024, Zhejiang, Peoples R China..
2018 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 26, no 18, p. 23918-23925Article in journal (Refereed) Published
Abstract [en]

Dielectric nanoantenna-based metasurfaces have attracted wide attention for their outstanding performance in light manipulation with low loss and full phase coverage enabled by multipolar resonances. To make the metasurfaces actively tunable, we adopt a kind of phase-changing material Ge2Sb2Te5 to construct non-volatile, switchable antenna-based metasurfaces in the mid-infrared spectrum region. Our design of the metasurface can realize switching between electric and magnetic dipole resonances across a broad spectrum region through crystalline-amorphous phase transitions under fixed design. Moreover, the transmission switching contrast between different phases can be up to 30dB (-30dB), due to the shift of multipolar resonances. This reconfigurable antenna-based metasurface will pave the way for ultimate design of light modulators, deflectors, holograms and so on for future optical communication networks.

Place, publisher, year, edition, pages
Optical Society of America, 2018. Vol. 26, no 18, p. 23918-23925
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URN: urn:nbn:se:kth:diva-235107DOI: 10.1364/OE.26.023918ISI: 000443431400132PubMedID: 30184886Scopus ID: 2-s2.0-85052711624OAI: oai:DiVA.org:kth-235107DiVA, id: diva2:1249403
Note

QC 20180919

Available from: 2018-09-19 Created: 2018-09-19 Last updated: 2018-09-19Bibliographically approved

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Tian, Jingyi

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