Please use this identifier to cite or link to this item: https://doi.org/10.29026/oea.2021.200031
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dc.titleGeneration of super-resolved optical needle and multifocal array using graphene oxide metalenses
dc.contributor.authorWang, Hongtao
dc.contributor.authorHao, Chenglong
dc.contributor.authorLin, Han
dc.contributor.authorWang, Yongtian
dc.contributor.authorLan, Tian
dc.contributor.authorQiu, Chengwei
dc.contributor.authorJia, Baohua
dc.date.accessioned2022-10-12T08:12:26Z
dc.date.available2022-10-12T08:12:26Z
dc.date.issued2021-01-01
dc.identifier.citationWang, Hongtao, Hao, Chenglong, Lin, Han, Wang, Yongtian, Lan, Tian, Qiu, Chengwei, Jia, Baohua (2021-01-01). Generation of super-resolved optical needle and multifocal array using graphene oxide metalenses. Opto-Electronic Advances 4 (2) : 1-Nov. ScholarBank@NUS Repository. https://doi.org/10.29026/oea.2021.200031
dc.identifier.issn2096-4579
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/232551
dc.description.abstractUltrathin flat metalenses have emerged as promising alternatives to conventional diffractive lenses, offering new possibilities for myriads of miniaturization and interfacial applications. Graphene-based materials can achieve both phase and amplitude modulations simultaneously at a single position due to the modification of the complex refractive index and thickness by laser conversion from graphene oxide into graphene like materials. In this work, we develop graphene oxide metalenses to precisely control phase and amplitude modulations and to achieve a holistic and systematic lens design based on a graphene-based material system. We experimentally validate our strategies via demonstrations of two graphene oxide metalenses: one with an ultra-long (~16?) optical needle, and the other with axial multifocal spots, at the wavelength of 632.8 nm with a 200 nm thin film. Our proposed graphene oxide metalenses unfold unprecedented opportunities for accurately designing graphene-based ultrathin integratable devices for broad applications. © 2021 Institute of Optics and Electronics, Chinese Academy of Sciences. All rights reserved.
dc.publisherChinese Academy of Sciences
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceScopus OA2021
dc.subjectFemtosecond laser reduction
dc.subjectGraphene oxide
dc.subjectMetalens
dc.subjectMultifocal spots
dc.subjectOptical needle
dc.typeArticle
dc.contributor.departmentCOLLEGE OF DESIGN AND ENGINEERING
dc.description.doi10.29026/oea.2021.200031
dc.description.sourcetitleOpto-Electronic Advances
dc.description.volume4
dc.description.issue2
dc.description.page1-Nov
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