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dc.contributor.authorPlaskocinski, T.
dc.contributor.authorArita, Y.
dc.contributor.authorBruce, G. D.
dc.contributor.authorPersheyev, S.
dc.contributor.authorDholakia, K.
dc.contributor.authorDi Falco, A.
dc.contributor.authorOhadi, H.
dc.identifier.citationPlaskocinski , T , Arita , Y , Bruce , G D , Persheyev , S , Dholakia , K , Di Falco , A & Ohadi , H 2023 , ' Laser writing of parabolic micromirrors with a high numerical aperture for optical trapping and rotation ' , Applied Physics Letters , vol. 123 , no. 8 , 081106 .
dc.identifier.otherBibCode: 2023arXiv230806345P
dc.identifier.otherORCID: /0000-0003-3403-0614/work/141643329
dc.identifier.otherORCID: /0000-0001-6418-111X/work/141643418
dc.identifier.otherORCID: /0000-0003-0454-9669/work/141643527
dc.identifier.otherORCID: /0000-0002-7338-8785/work/141643621
dc.descriptionFunding: This work was supported by the UK Engineering and Physical Sciences Research Council (EP/P030017/1 and EP/S014403/1), by the European Research Council (ERC) under the European Union Horizon 2020 Research and Innovation Program (Grant Agreement No. 819346). HO acknowledges support from the Carnegie Trust for Universities of Scotland (Grant No. RIG007685). KD acknowledges support from the Australian Research Council (Grant No. DP220102303).en
dc.description.abstractOn-chip optical trapping systems allow for high scalability and lower the barrier to access. Systems capable of trapping multiple particles typically come with high cost and complexity. Here, we present a technique for making parabolic mirrors with micrometer-size dimensions and high numerical apertures (NA > 1). Over 350 mirrors are made by simple CO2 laser ablation of glass followed by gold deposition. We fabricate mirrors of arbitrary diameter and depth at a high throughput rate by carefully controlling the ablation parameters. We use the micromirrors for three-dimensional optical trapping of microbeads in solution, achieving a maximum optical trap stiffness of 52 pN/μm/W. We, then, further demonstrate the viability of the mirrors as in situ optical elements through the rotation of a vaterite particle using reflected circularly polarized light. The method used allows for rapid and highly customizable fabrication of dense optical arrays.
dc.relation.ispartofApplied Physics Lettersen
dc.subjectQC Physicsen
dc.titleLaser writing of parabolic micromirrors with a high numerical aperture for optical trapping and rotationen
dc.typeJournal articleen
dc.contributor.sponsorEuropean Research Councilen
dc.contributor.sponsorCarnegie Trusten
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Centre for Biophotonicsen
dc.contributor.institutionUniversity of St Andrews. Sir James Mackenzie Institute for Early Diagnosisen
dc.contributor.institutionUniversity of St Andrews. Institute of Behavioural and Neural Sciencesen
dc.contributor.institutionUniversity of St Andrews. Biomedical Sciences Research Complexen
dc.contributor.institutionUniversity of St Andrews. Centre for Designer Quantum Materialsen
dc.description.statusPeer revieweden

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