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    Area of Science:

    • Nonlinear optics
    • Wave propagation physics

    Background:

    • Nonlinear propagation of light pulses can excite dispersive waves.
    • These waves are anchored at frequencies determined by the chromatic dispersion curve.

    Purpose of the Study:

    • To analytically derive conditions for dispersive-wave self-frequency shift in the normal dispersion regime.
    • To present a novel approach for analyzing this phenomenon.

    Main Methods:

    • Analytical derivation of conditions for self-frequency shift.
    • Study of the evolution of nonlinear and dispersive length scales.
    • Analysis in the normal dispersion regime.

    Main Results:

    • Conditions enabling dispersive-wave self-frequency shift over propagation distance are derived.
    • A simpler, consistent, and insightful analysis is presented.

    Conclusions:

    • The study provides a novel analytical framework for understanding dispersive-wave self-frequency shift.
    • This approach offers potential applications in other nonlinear regimes.