A long-range polarization-controlled optical tractor beam
The laser beam has become an indispensable tool for the controllable manipulation and transport of microscopic objects in biology, physical chemistry and condensed matter physics. In particular, 'tractor' laser beams can draw matter towards a laser source and perform, for instance, all-optical remote sampling. Recent advances in lightwave technology have already led to small-scale experimental demonstrations of tractor beams1-4. However, the realization of long-range tractor beams has not gone...[Show more]
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