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Related Concept Videos

Deflection of a Beam01:19

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Accurately determining beam deflection and slope under various loading conditions in structural engineering is crucial for ensuring safety and structural integrity. Singularity functions offer a streamlined approach to analyzing beams, especially when multiple loading functions complicate the bending moment equation.
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Vortex-antivortex dynamics and singularity splitting in engineered composite vortex beams.

Minghao Guo, Shirui Zhang, Jingbo Ma

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    This summary is machine-generated.

    We precisely control optical singularities in composite vortex beams by tuning parameters like topological charge. This allows for controlled splitting of high-order singularities into multiple lower-order ones.

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    Area of Science:

    • Optics and Photonics
    • Quantum Optics
    • Structured Light Fields

    Background:

    • Vortex-antivortex (V-AV) pairs and singularity splitting are key phenomena in optical fields.
    • Composite vortex beams (CVBs) offer a platform for studying complex optical singularity dynamics.

    Purpose of the Study:

    • To investigate the dynamics of V-AV pairs and singularity splitting in CVBs.
    • To demonstrate precise control over optical singularities by engineering CVBs.

    Main Methods:

    • Coaxial superposition of two single-ring Laguerre-Gaussian (LG) modes.
    • Systematic tuning of topological charges (TCs), power ratio, and beam waists.
    • Analytical and numerical simulations.

    Main Results:

    • Net TC determines the total number of singularities.
    • Power and beam waist ratios control V-AV dipole trajectories.
    • Controlled splitting of high-order singularities into multiple first-order singularities observed.

    Conclusions:

    • Fundamental understanding of singularity physics in complex optical fields.
    • Robust methodology for on-demand design of multi-singularity landscapes.
    • Enables advanced applications in optical communication and particle manipulation.