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Updated: Sep 30, 2025

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Radially polarized twisted partially coherent vortex beams.

Leixin Liu, Haiyun Wang, Lin Liu

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    Summary
    This summary is machine-generated.

    We introduce a novel radially polarized twisted partially coherent vortex (RPTPCV) beam. Its unique phase properties enable enhanced beam stability and faster rotation during propagation, with applications in optical communications and particle manipulation.

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    Area of Science:

    • Optics and Photonics
    • Quantum Optics
    • Laser Physics

    Background:

    • Partially coherent vector beams are crucial for various optical applications.
    • Simultaneous carrying of twist and vortex phases in such beams is underexplored.
    • Understanding polarization evolution and propagation characteristics is essential.

    Purpose of the Study:

    • To introduce and theoretically investigate a new partially coherent vector beam: the radially polarized twisted partially coherent vortex (RPTPCV) beam.
    • To analyze the propagation dynamics and polarization properties of RPTPCV beams through paraxial optical systems.
    • To experimentally validate the theoretical predictions for RPTPCV beam generation and characteristics.

    Main Methods:

    • Utilized pseudo-modal expansion and the fast Fourier transform algorithm for theoretical analysis.
    • Investigated second-order statistics including spectral density, degree of polarization (DOP), and state of polarization (SOP).
    • Designed and implemented an experimental setup for generating RPTPCV beams.

    Main Results:

    • RPTPCV beam propagation properties are significantly influenced by the handedness of twist and vortex phases.
    • Same-handedness phases maintain a dark hollow profile and exhibit faster beam spot rotation.
    • Same-handedness phases resist de-polarization and allow modulation of DOP and SOP via phase parameters.

    Conclusions:

    • The RPTPCV beam offers controllable propagation and polarization characteristics.
    • Experimental results align well with theoretical predictions, confirming the beam's feasibility.
    • Potential applications include particle manipulation, free-space optical communications, and polarization lidar.