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Optical forces induced behavior of a particle in a non-diffracting vortex beam

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    0384151 - ÚPT 2013 RIV US eng J - Journal Article
    Šiler, Martin - Jákl, Petr - Brzobohatý, Oto - Zemánek, Pavel
    Optical forces induced behavior of a particle in a non-diffracting vortex beam.
    Optics Express. Roč. 20, č. 22 (2012), s. 24304-24319. ISSN 1094-4087
    R&D Projects: GA ČR GPP205/11/P294; GA MŠk ED0017/01/01; GA MŠk LH12018
    Institutional support: RVO:68081731
    Keywords : optical vortex beam * tweezers * optical forces
    Subject RIV: BH - Optics, Masers, Lasers
    Impact factor: 3.546, year: 2012

    An interaction between a light field with complex field spatial distribution and a micro-particle leads to forces that drag the particle in space and may confine it in a stable position or a trajectory. The particle behavior is determined by its size with respect to the characteristic length of the spatially periodic or symmetric light field distribution. We study theoretically and experimentally the behavior of a microparticle near the center of an optical vortex beam in a plane perpendicular to the beam propagation. We show that such particle may be stably trapped either in a dark spot on the vortex beam axis, or in one of two points placed off the optical axis. It may also circulate along a trajectory having its radius smaller or equal to the radius of the first bright vortex ring.
    Permanent Link: http://hdl.handle.net/11104/0213883

     
     
Number of the records: 1