An optical nanotrap array movable over a milimetre range

We present the theoretical and experimental study of nondiffracting Bessel beams as a device for optical manipulation and confinement of nanoparticles. We express analytically the optical forces acting on a nanoparticle placed into a single and two counter-propagating non-paraxial nondiffracting bea...

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Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2006-07, Vol.84 (1-2), p.197-203
Main Authors: Cizmar, T, Siler, M, Zemanek, P
Format: Article
Language:English
Subjects:
Arrays
Beads
Beams (radiation)
Nanocomposites
Nanomaterials
Nanoparticles
Nanostructure
Standing waves
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Summary:We present the theoretical and experimental study of nondiffracting Bessel beams as a device for optical manipulation and confinement of nanoparticles. We express analytically the optical forces acting on a nanoparticle placed into a single and two counter-propagating non-paraxial nondiffracting beams created behind the axicon. Nanoparticle behavior in these configurations is predicted by computer simulations. Finally we demonstrate experimentally how standing waves created from two independent counter-propagating nondiffraction beams confines polystyrene beads of radii 100 nm, and organizes them into a one-dimensional chain 1 mm long. Phase shift in one beam causes the motion of the whole structure of the standing wave together with any confined objects over its extent.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-006-2221-2