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    Area of Science:

    • Nonlinear optics
    • Quantum optics
    • Atomic physics

    Background:

    • Controlling light beam collapse in nonlinear media is a significant research area.
    • Vector beams, with coupled spin and orbital angular momentum, are gaining attention for their unique properties.

    Purpose of the Study:

    • To investigate the collapse dynamics of a hybrid vector beam (HVB) in rubidium atomic vapor.
    • To understand the role of medium absorption in modulating filamentation behavior.
    • To analyze the evolution of polarization distribution during beam propagation.

    Main Methods:

    • Propagation of a hybrid vector beam (HVB) through rubidium atomic vapor.
    • Observation and analysis of beam filamentation and polarization changes.
    • Characterization of the influence of medium absorption on collapse dynamics.

    Main Results:

    • The HVB initially collapses into filaments at linearly polarized positions.
    • Filament locations shift to circularly polarized positions with increased propagation distance.
    • Medium absorption was identified as a key factor in modulating filamentation, acting as a control parameter.

    Conclusions:

    • The study demonstrates a novel method for controlling light beam filamentation using medium absorption.
    • The observed polarization evolution of HVBs provides insights into light-matter interactions in nonlinear media.
    • Findings suggest potential applications in optical switches and logic devices for information processing.