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27 September 2013 Revival of the dark core in scattered optical vortices
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Abstract
We have experimentally observed the revival of the dark core in the far field intensity distribution in optical vor­ tices after scattering through rotating ground glass plate. The diameter and darkness of the core is independent of the speed of the rotating ground glass plate. They depend on the spot size and azimuthal index of the beam incident on it. This shows that the spatial coherence of the scattered light is independent of the speed of the rotating ground glass plate. Our experimental results are in good agreement with the numerical results based on the theory given by Wang, Cai and Korotkova (Opt. Exp. 17, 22366 (2009)).
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Salla Gangi Reddy, Ashok Kumar, Shashi Prabhakar, and R. P. Singh "Revival of the dark core in scattered optical vortices", Proc. SPIE 8840, Optical Modeling and Performance Predictions VI, 884008 (27 September 2013); https://doi.org/10.1117/12.2023037
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