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Selective trapping of many particles by laser speckles

Selective trapping of many particles by laser speckles
Image: courtesy of ASD
Fig. 1. A few thousands particles (bright points) are captured simultaneously in air within a cigar-shaped trapping region created by a speckled bottle beam as described by Shvedov VG et al 2010. See also their Fig. 2 for additional detail. [ASD]
Selective trapping of many particles by laser speckles
Image: courtesy of ASD
Fig. 2. A computer-generated 3D model of the speckle intensity distribution for a small volume, 5×5×15μm3 inside the trap shown in the top panel. Blue surfaces enclose the high-intensity speckles. Voids represent the low-intensity regions, which form the traps. The green sphere is a trapped particle (diameter 2μm). See also Fig. 3 in Shvedov VG et al 2010 for additional detail. [ASD]
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