Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevLett.107.203601
Title: Single gradientless light beam drags particles as tractor beams
Authors: Novitsky, A.
Qiu, C.-W. 
Wang, H.
Issue Date: 10-Nov-2011
Source: Novitsky, A., Qiu, C.-W., Wang, H. (2011-11-10). Single gradientless light beam drags particles as tractor beams. Physical Review Letters 107 (20) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevLett.107.203601
Abstract: Usually a light beam pushes a particle when the photons act upon it. We investigate the optical forces by nonparaxial gradientless beams and find that the forces can drag suitable particles all the way towards the light source. The major criterion of realizing the backward dragging force is the strong nonparaxiality of the light beam, which contributes to the pulling force owing to momentum conservation. The nonparaxiality of the Bessel beam can be manipulated to possess a dragging force along both the radial longitudinal directions, i.e., a "tractor beam" with stable trajectories is achieved. © 2011 American Physical Society.
Source Title: Physical Review Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/57416
ISSN: 00319007
DOI: 10.1103/PhysRevLett.107.203601
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