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dc.contributor.authorArita, Yoshihiko
dc.contributor.authorDholakia, Kishan
dc.identifier.citationArita , Y & Dholakia , K 2018 , ' Dynamics of a microparticle levitated in vacuum by an optical vortex beam ' , The Review of Laser Engineering , vol. 46 , no. 4 , pp. 192-195 .en
dc.identifier.otherPURE: 255918195
dc.identifier.otherPURE UUID: 210c3923-babe-4854-9bc6-75c312163407
dc.description.abstractLevitated optomechanics is an emerging area of study enabled by optically trapped mesoscopic particles in vacuum. This opens the path to a range of new opportunities and insights at the classical-quantum interface. We review our recent work on the dynamics of an optically levitated microparticle in vacuum placed in an optical vortex beam. The dynamics are dictated by the orbital angular momentum of the field. The microparticle is confined within a Laguerre-Gaussian beam and orbits the annular beam profile with increasing angular velocity as the air drag force is reduced, as a result of reducing the background pressure. Furthermore, we extend this to explore the particle dynamics in a complex three- dimensional optical potential with orbital angular momentum in vacuum. The potential is formed by the generation of a“perfect vortex”beam, which upon propagation, evolves to a Bessel beam. We show that the optical gradient and scattering forces interplay with the inertial and gravitational forces acting on the trapped particle, which produces a rich variety of orbital motions with respect to the beam propagation axis.
dc.relation.ispartofThe Review of Laser Engineeringen
dc.rights© 2018, Review of Laser Engineering. This work has been made available online in accordance with the publisher's policies. This is the final published version of the work, which was originally published at
dc.subjectLaser trappingen
dc.subjectLevitated optomechanicsen
dc.subjectOrbital angular momentumen
dc.subjectLaguerre Gaussian beamen
dc.subjectPerfect vortex beamen
dc.subjectQC Physicsen
dc.subjectT Technologyen
dc.titleDynamics of a microparticle levitated in vacuum by an optical vortex beamen
dc.typeJournal itemen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Biomedical Sciences Research Complexen
dc.description.statusPeer revieweden

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