Journal
OPTICS LETTERS
Volume 37, Issue 23, Pages 4949-4951Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.37.004949
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Funding
- National Natural Science Foundation of China [61205122, 61107037]
- Fundamental Research Funds for the Central Universities [ZYGX2010J112]
- Royal Society
- UK EPSRC
- Engineering and Physical Sciences Research Council [EP/J01771X/1] Funding Source: researchfish
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By analysis of the far-field cross-correlation function (CCF) of partially coherent optical beams, we demonstrate an implicit rule that the number of ring dislocations (dark zones) of the far-field CCF is equal to the original topological charge of an optical vortex rendered partially coherent. This novel link between an optical vortex and its correlation singularity may offer an efficient method for measuring the orbital angular momentum of partially coherent optical vortices in fields such as astrophysics and astronomy, as well as atmospheric laser communication. (C) 2012 Optical Society of America
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