Microoptomechanical pumps assembled and driven by holographic optical vortex arrays

Kosta Ladavac, David G. Grier

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Beams of light with helical wavefronts can be focused into ring-like optical traps known as optical vortices. The orbital angular momentum carried by photons in helical modes can be transferred to trapped mesoscopic objects and thereby coupled to a surrounding fluid. We demonstrate that arrays of optical vortices created with the holographic optical tweezer technique can assemble colloidal spheres into dynamically reconfigurable microoptomechanical pumps assembled by optical gradient forces and actuated by photon orbital angular momentum.

    Original languageEnglish (US)
    Pages (from-to)1144-1149
    Number of pages6
    JournalOptics Express
    Volume12
    Issue number6
    DOIs
    StatePublished - Mar 2004

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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