Journal
OPTICS EXPRESS
Volume 28, Issue 6, Pages 8475-8483Publisher
Optica Publishing Group
DOI: 10.1364/OE.387181
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Funding
- National Key Research and Development Program of China [2019YFA0705000]
- National Natural Science Foundation of China [11525418, 11874046, 11904247, 11947239, 11974218, 91750201]
- Natural Sciences and Engineering Research Council of Canada [RGPIN-2018-05497]
- Innovation group of Jinan [2018GXRC010]
- China Postdoctoral Science Foundation [2019M662424]
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We establish a general form of the cross-spectral density of statistical sources that generate vortex preserving partially coherent beams on propagation through any linear ABCD optical system. We illustrate our results by introducing a class of partially coherent vortex beams with a closed form cross-spectral density at the source and demonstrating the beam vortex structure preservation on free space propagation and imaging by a thin lens. We also show the capacity of such vortex preserving beams of any state of spatial coherence to trap nanoparticles with the refractive index smaller than that of a surrounding medium. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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