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Paper detail

Correlation-induced orbital angular momentum changes

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.

preprint2020arXivOpen access
Yongtao ZhangOlga KorotkovaYangjian CaiGreg Gbur
physics.optics
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Yongtao ZhangOlga KorotkovaYangjian CaiGreg Gbur

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