Journal
OPTICS EXPRESS
Volume 18, Issue 13, Pages 14238-14244Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.18.014238
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Funding
- Natural Environment Research Council
- EPSRC [EP/E018297/1, EP/G007713/1] Funding Source: UKRI
- NERC [NE/H001972/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E018297/1, EP/G007713/1] Funding Source: researchfish
- Natural Environment Research Council [NE/H001972/1] Funding Source: researchfish
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We present evidence that aerosol droplets, similar to 1-2 mu m in diameter, can be optically bound over a 4mm distance within a volume formed by the overlap of the central cores and rings of two counterpropagating Bessel beams. The sizes of the individual polydisperse aerosol particles can be estimated from the angular variation of the elastic light scattering. Scattered light from the two orthogonally polarized trapping beams and from a Gaussian probe beam of different wavelength can be used to provide independent estimations of size. The coalescence of two droplets was observed and characterized. (C) 2010 Optical Society of America
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