Revival of the dark core in scattered optical vortices

Salla Gangi Reddy; Ashok Kumar; Shashi Prabhakar; R. P. Singh

doi:10.1117/12.2023037

27 September 2013 Revival of the dark core in scattered optical vortices

Salla Gangi Reddy, Ashok Kumar, Shashi Prabhakar, R. P. Singh

Proceedings Volume 8840, Optical Modeling and Performance Predictions VI; 884008 (2013) https://doi.org/10.1117/12.2023037
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

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)).

Citation Download Citation

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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