Optical conveyors: A class of active tractor beams

David B. Ruffner, David G. Grier

    Research output: Contribution to journalArticlepeer-review


    We experimentally demonstrate a class of tractor beams created by coherently superposing coaxial Bessel beams. These optical conveyors have periodic intensity variations along their axes that act as highly effective optical traps for micrometer-scale objects. Trapped objects can be moved selectively upstream or downstream along the conveyor by appropriately changing the Bessel beams' relative phase. The same methods used to project a single optical conveyor can project arrays of independent optical conveyors, allowing bidirectional transport in three dimensions.

    Original languageEnglish (US)
    Article number163903
    JournalPhysical Review Letters
    Issue number16
    StatePublished - Oct 18 2012

    ASJC Scopus subject areas

    • General Physics and Astronomy


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