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arXiv · 2005.01667

Correlation-induced orbital angular momentum changes

Yongtao Zhang·Olga Korotkova·Yangjian Cai·Greg Gbur
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Abstract

We demonstrate that the orbital angular momentum flux density of a paraxial light beam can change on propagation in free space. These changes are entirely due to the spatial coherence state of the source, and the effect is analogous to correlation-induced changes in the intensity, spectrum and polarization of a beam. The use of the source coherence state to control the width, shape, and transverse shifts of the OAM flux density is demonstrated with numerical examples.

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Yongtao Zhang, Olga Korotkova, Yangjian Cai, Greg Gbur. 2020-05-04. Correlation-induced orbital angular momentum changes. https://doi.org/10.1103/physreva.102.063513

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