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    This study explores pulsed wave solutions, focusing on those with rotational symmetry. These waves concentrate along an axis, forming approximately spherical wavefronts, and can carry angular momentum.

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    Area of Science:

    • Physics
    • Optics
    • Wave phenomena

    Background:

    • Pulsed solutions are crucial for understanding wave propagation.
    • Plane-wave decomposition is a standard technique in wave physics.
    • Longitudinal invariance simplifies complex wave behavior.

    Purpose of the Study:

    • To investigate properties of pulsed solutions to scalar and vector wave equations.
    • To analyze solutions with equal longitudinal spatial frequency and rotational symmetry.
    • To explore the characteristics of wave concentration and wavefronts.

    Main Methods:

    • Analyzing plane-wave solutions to wave equations.
    • Imposing conditions for longitudinal invariance and rotational symmetry.
    • Deriving closed-form expressions for specific wave fields.

    Main Results:

    • Identified pulsed solutions invariant in the longitudinal direction.
    • Demonstrated strong axial wave concentration for rotationally symmetric solutions.
    • Derived closed-form expressions showing approximately spherical wavefronts.
    • Considered solutions with orbital and spin angular momenta.

    Conclusions:

    • Pulsed waves with specific symmetries exhibit unique focusing properties.
    • The derived solutions offer insights into structured light and wave mechanics.
    • These findings have implications for wave manipulation and applications.