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    Area of Science:

    • Nonlinear optics
    • Wave propagation

    Background:

    • Gaussian beams are fundamental in optics.
    • Nonlinear optical materials exhibit intensity-dependent properties.
    • Nonlocal nonlinear effects modify light-matter interactions.

    Purpose of the Study:

    • To investigate far-field intensity distributions of Gaussian beams.
    • To analyze the influence of nonlinear refraction and absorption.
    • To compare effects in media with varying degrees of nonlocality.

    Main Methods:

    • Numerical simulations of beam propagation.
    • Analysis of far-field intensity patterns.
    • Parametric study varying Z-axis position and nonlinear absorption sign.

    Main Results:

    • Far-field intensity patterns are sensitive to nonlinear absorption.
    • Stronger nonlocal media show greater sensitivity to nonlinear absorption.
    • Nonlinear absorption sign influences intensity distributions.

    Conclusions:

    • Nonlocal nonlinear absorption significantly alters Gaussian beam far-field patterns.
    • The degree of nonlocality dictates the susceptibility to nonlinear absorption effects.