Optical trapping and sizing of aerosol droplets using counter-propagating Bessel beams

A. E. Carruthers; A. J Orr-Ewing; J. P. Reid

doi:10.1117/12.862506

27 August 2010 Optical trapping and sizing of aerosol droplets using counter-propagating Bessel beams

A. E. Carruthers, A. J Orr-Ewing, J. P. Reid

Proceedings Volume 7762, Optical Trapping and Optical Micromanipulation VII; 77620V (2010) https://doi.org/10.1117/12.862506
Event: SPIE NanoScience + Engineering, 2010, San Diego, California, United States

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.

Citation Download Citation

A. E. Carruthers, A. J Orr-Ewing, and J. P. Reid "Optical trapping and sizing of aerosol droplets using counter-propagating Bessel beams", Proc. SPIE 7762, Optical Trapping and Optical Micromanipulation VII, 77620V (27 August 2010); https://doi.org/10.1117/12.862506

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