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Vortex-antivortex pair control in quadrupole Gaussian beams.

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    This summary is machine-generated.

    Controlling vortex pairs in Gaussian beams is possible using a single parameter. This research identifies three classes of quadrupole vortex beams based on vortex pair creation and annihilation, with experimental verification.

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    Area of Science:

    • Optics and Photonics
    • Quantum Information Science

    Background:

    • Multi-vortex systems within Gaussian beams exhibit complex propagation dynamics in free space.
    • Vortex quadrupoles represent a specific multi-vortex configuration with unique characteristics.

    Purpose of the Study:

    • To develop a systematic method for controlling the creation and annihilation of vortex pairs in a vortex quadrupole system.
    • To classify quadrupole vortex beams based on vortex pair dynamics.
    • To analyze the symmetry, asymptotic behavior, and stability of these beams.

    Main Methods:

    • Theoretical modeling of multi-vortex systems nested in Gaussian beams.
    • Introduction of a single parameter to control vortex pair dynamics.
    • Analysis of beam symmetry, asymptotic behavior, and stability.
    • Experimental verification of theoretical predictions.

    Main Results:

    • A single parameter effectively controls the creation and annihilation of vortex pairs in a vortex quadrupole.
    • Three distinct classes of quadrupole vortex beams are identified based on vortex pair behavior.
    • Detailed analysis of beam symmetry, asymptotic behavior, and stability is provided.

    Conclusions:

    • The proposed method offers precise control over vortex pair dynamics in Gaussian beams.
    • The classification of quadrupole vortex beams provides a framework for understanding their behavior.
    • Experimental validation confirms the theoretical findings, paving the way for potential applications.