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Proceedings Paper

Trapping microscopic particles with singular beams
Author(s): N. R. Heckenberg; T. A. Nieminen; Marlies E. J. Friese; Halina Rubinsztein-Dunlop
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Paper Abstract

It has been shown previously that it is possible to two- dimensionally trap a microscopic absorbing particle against a substrate using a focused doughnut beam. Beam angular momentum associated with the phase singularity is transferred to the particle, causing it to rotate. A detailed consideration of the optical forces acting on a particle shows the importance of wavefront curvature for stable trapping and lead to a quantitative description of the motion of the particle in single and multiple beam traps.

Paper Details

Date Published: 3 August 1998
PDF: 8 pages
Proc. SPIE 3487, International Conference on Singular Optics, (3 August 1998); doi: 10.1117/12.317715
Show Author Affiliations
N. R. Heckenberg, Univ. of Queensland (Australia)
T. A. Nieminen, Univ. of Queensland (Australia)
Marlies E. J. Friese, Univ. of Queensland (Australia)
Halina Rubinsztein-Dunlop, Univ. of Queensland (Australia)

Published in SPIE Proceedings Vol. 3487:
International Conference on Singular Optics
Marat S. Soskin, Editor(s)

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