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    Researchers generalized twisted-vortex Gaussian Schell-model beams by adding spatially varying polarization. This innovation allows for precise control over the beam's total angular momentum from three distinct sources.

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    Area of Science:

    • Optics and Photonics
    • Quantum Information Science

    Background:

    • Partially coherent beams are crucial in optical systems.
    • Vortex beams carry orbital angular momentum.
    • Gaussian Schell-model beams are a well-studied class of partially coherent beams.

    Purpose of the Study:

    • To generalize twisted-vortex Gaussian Schell-model beams.
    • To introduce spatially varying polarization to these beams.
    • To investigate the sources and control of angular momentum in the modified beams.

    Main Methods:

    • Generalization of twisted-vortex Gaussian Schell-model beams.
    • Incorporation of spatially varying polarization.
    • Analysis of angular momentum contributions from vortex order, beam twist, and circular polarization.

    Main Results:

    • Creation of a novel partially coherent vortex beam with spatially varying polarization.
    • Demonstration of angular momentum derived from three distinct sources.
    • Achieved unprecedented control over the total angular momentum and its transverse distribution.

    Conclusions:

    • The developed beam offers enhanced control over optical angular momentum.
    • This work expands the toolkit for manipulating light properties.
    • Potential applications in optical trapping, imaging, and communication.