Optical sculpting: trapping through disorder and transfer of orbital angular momentum

T. Cizmar, M. Mazilu, H. Dalgarno, P. Ashok, F. Gunn-Moore, K. Dholakia

    Research output: Chapter in Book/Report/Conference proceedingConference contribution


    In this paper, we explore the propagation of light through disordered material and ask whether we can create an optimal focus in such a scenario. We use the complex modulation of the input light (i.e. modulation in both phase and amplitude) for these studies, implemented by use a spatial light modulator (SLM) and show trapping and manipulation through a static turbid medium. We then extend the system to create a tandem SLM system with an acousto-optic deflector. This has further advantages as we can now not only project light fields into turbid media but can also create interference-free mode superpositions of light fields such as Laguerre-Gaussian (LG) and Bessel modes. This is illustrated by controlled rotation of trapped particles in weighted, interference-free superpositions of LG beams of opposite order but equal magnitude.

    Original languageEnglish
    Title of host publicationComplex Light and Optical Forces V
    EditorsDavid L. Andrews, Enrique J. Galvez, Jesper Gluckstad
    Place of PublicationBellingham
    PublisherSPIE-International Society for Optical Engineering
    Number of pages7
    ISBN (Print)9780819484871
    Publication statusPublished - 2011
    EventSPIE Photonics West 2011: Complex Light and Optical Forces V - Moscone Center, San Francisco, United States
    Duration: 26 Jan 201127 Jan 2011

    Publication series

    NameProceedings of SPIE
    ISSN (Print)0277-786X


    ConferenceSPIE Photonics West 2011: Complex Light and Optical Forces V
    CountryUnited States
    CitySan Francisco
    Internet address


    • optical tweezers
    • Coherence
    • trapping
    • optical vortex
    • LIGHT
    • BEAMS
    • Diffraction
    • Interference

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