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Vortex plate retarder-based approach for the generation of sub-20 fs light pulses carrying orbital angular momentum
Umeå University, Faculty of Science and Technology, Department of Physics.ORCID iD: 0000-0002-0839-4556
Umeå University, Faculty of Science and Technology, Department of Physics.ORCID iD: 0000-0001-5256-3292
Umeå University, Faculty of Science and Technology, Department of Physics.
Service OPERA-Photonique, Université libre de Bruxelles, Bruxelles, Belgium.
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2024 (English)In: Journal of Optics, ISSN 2040-8978, E-ISSN 2040-8986, Vol. 26, no 4, article id 045502Article in journal (Refereed) Published
Abstract [en]

We use a vortex retarder-based approach to generate few optical cycles light pulses carrying orbital angular momentum (OAM) (known also as twisted light or optical vortex) from a Yb:KGW oscillator pumping a noncollinear optical parametric amplifier generating sub-10 fs linearly polarized light pulses in the near infrared spectral range (central wavelength 850 nm). We characterize such vortices both spatially and temporally by using astigmatic imaging technique and second harmonic generation-based frequency resolved optical gating, respectively. The generation of optical vortices is analyzed, and its structure reconstructed by estimating the spatio-spectral field and Fourier transforming it into the temporal domain. As a proof of concept, we show that we can also generate sub-20 fs light pulses carrying OAM and with arbitrary polarization on the first-order Poincaré sphere.

Place, publisher, year, edition, pages
Institute of Physics (IOP), 2024. Vol. 26, no 4, article id 045502
Keywords [en]
optical vortex, orbital angular momentum, twisted light, ultrashort light pulses, vortex plate retarder
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:umu:diva-222577DOI: 10.1088/2040-8986/ad2e1fISI: 001183679100001Scopus ID: 2-s2.0-85187554162OAI: oai:DiVA.org:umu-222577DiVA, id: diva2:1849535
Funder
Swedish Research Council, 2021-05784The Kempe Foundations, JCK-3122EU, Horizon 2020, 801505Available from: 2024-04-08 Created: 2024-04-08 Last updated: 2024-04-11Bibliographically approved

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Tapani, TlekLin, Haifengde Andres, AitorBhuvanendran, HindujaMaccaferri, Nicolò

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