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dc.contributor.authorSroor, Hend
dc.contributor.authorHuang, Yao-Wei
dc.contributor.authorSephton, Bereneice
dc.contributor.authorNaidoo, Darryl
dc.contributor.authorVallés, Adam
dc.contributor.authorGinis, Vincent
dc.contributor.authorQiu, Cheng-Wei
dc.contributor.authorAmbrosio, Antonio
dc.contributor.authorCapasso, Federico
dc.contributor.authorForbes, Andrew
dc.date.accessioned2020-04-30T10:52:00Z
dc.date.available2020-04-30T10:52:00Z
dc.date.issued2020-04-27
dc.date.submitted2019-04-25
dc.identifier.citationSroor, H., Huang, Y.-W., Sephton, B., Naidoo, D., Vallés, A., Ginis, V., … Forbes, A. (2020). High-purity orbital angular momentum states from a visible metasurface laser. Nature Photonics. doi:10.1038/s41566-020-0623-z
dc.identifier.issn1749-4885
dc.identifier.issn1749-4893
dc.identifier.doi10.1038/s41566-020-0623-z
dc.identifier.urihttp://hdl.handle.net/10754/662691
dc.description.abstractOrbital angular momentum (OAM) from lasers holds promise for compact, at-source solutions for applications ranging from imaging to communications. However, conjugate symmetry between circular spin and opposite helicity OAM states (±ℓ) from conventional spin–orbit approaches has meant that complete control of light’s angular momentum from lasers has remained elusive. Here, we report a metasurface-enhanced laser that overcomes this limitation. We demonstrate new high-purity OAM states with quantum numbers reaching ℓ= 100 and non-symmetric vector vortex beams that lase simultaneously on independent OAM states as much as Δℓ= 90 apart, an extreme violation of previous symmetric spin–orbit lasing devices. Our laser conveniently outputs in the visible, producing new OAM states of light as well as all previously reported OAM modes from lasers, offering a compact and power-scalable source that harnesses intracavity structured matter for the creation of arbitrary chiral states of structured light.
dc.description.sponsorshipA.V. acknowledges support from the Claude Leon Foundation. This work was performed, in part, at the Center for Nanoscale Systems (CNS), a member of the National Nanotechnology Coordinated Infrastructure (NNCI), which is supported by the NSF under award no. 1541959. CNS is a part of Harvard University. F.C. is supported by funding from the Air Force Office of Scientific Research (grant nos. MURI: FA9550-14-1-0389, FA9550-16-1-0156), and the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) (award no. OSR-2016-CRG5-2995). Y.-W.H. and C.-W.Q. are supported by the National Research Foundation, Prime Minister's Office, Singapore under its Competitive Research Program CRP award no. NRF-CRP15-2015-03).
dc.publisherSpringer Nature
dc.relation.urlhttp://www.nature.com/articles/s41566-020-0623-z
dc.rightsArchived with thanks to Nature Photonics
dc.titleHigh-purity orbital angular momentum states from a visible metasurface laser
dc.typeArticle
dc.identifier.journalNature Photonics
dc.rights.embargodate2020-10-27
dc.eprint.versionPost-print
dc.contributor.institutionSchool of Physics, University of the Witwatersrand, Wits, South Africa.
dc.contributor.institutionHarvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA.
dc.contributor.institutionDepartment of Electrical and Computer Engineering, National University of Singapore, Singapore, Singapore.
dc.contributor.institutionCSIR National Laser Centre, Pretoria, South Africa.
dc.contributor.institutionPresent address: Molecular Chirality Research Center, Chiba University, Inage-ku, Chiba, Japan.
dc.contributor.institutionApplied Physics, Vrije Universiteit Brussel, Brussels, Belgium.
dc.contributor.institutionCenter for Nanoscale Systems, Harvard University, Cambridge, MA, USA.
dc.contributor.institutionCNST – Fondazione Istituto Italiano di Tecnologia Via Giovanni Pascoli, Milan, Italy.
kaust.grant.numberOSR-2016-CRG5-2995
dc.date.accepted2020-03-18
kaust.acknowledged.supportUnitCompetitive Research
kaust.acknowledged.supportUnitOffice of Sponsored Research (OSR)
dc.date.published-online2020-04-27
dc.date.published-print2020-08


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