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Proceedings Paper

Optical trapping and sizing of aerosol droplets using counter-propagating Bessel beams
Author(s): A. E. Carruthers; A. J Orr-Ewing; J. P. Reid
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Paper Abstract

Two counter-propagating Bessel beams are used to create an optical trap to confine polydisperse aerosol droplets. A single arm can be used to optically guide droplets over macroscopic distances. Two opposing beams create a trapping region to optically confine particles over distances of 4mm. Droplets are optically trapped in the surrounding rings and the central core and are characterised using light scattering techniques. The elastically scattered fringe spacing from the 532nm trapping beam and from a 633nm probe beam are used to independently size droplets using Mie theory, as well as assessing the size from glare spots.

Paper Details

Date Published: 27 August 2010
PDF: 10 pages
Proc. SPIE 7762, Optical Trapping and Optical Micromanipulation VII, 77620V (27 August 2010); doi: 10.1117/12.862506
Show Author Affiliations
A. E. Carruthers, Univ. of Bristol (United Kingdom)
A. J Orr-Ewing, Univ. of Bristol (United Kingdom)
J. P. Reid, Univ. of Bristol (United Kingdom)

Published in SPIE Proceedings Vol. 7762:
Optical Trapping and Optical Micromanipulation VII
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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