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    Area of Science:

    • Optics and Photonics
    • Wave Propagation

    Background:

    • Asymmetric optical beams like Airy beams exhibit curved trajectories.
    • Controlling beam propagation is crucial for various optical applications.

    Purpose of the Study:

    • To demonstrate self-accelerating, diffraction-free optical beams with symmetric profiles.
    • To achieve arbitrary power-law curved trajectories for optical pulses.

    Main Methods:

    • Sculpting the spatiotemporal spectrum of optical pulses.
    • Utilizing propagation-invariant space-time wave packets (STWPs).
    • Modifying spectral domain tilts to control trajectory curvature.

    Main Results:

    • Realized symmetric, self-accelerating STWPs that are diffraction-free.
    • Demonstrated beams traveling along linear, quadratic, cubic, and square-root power-law trajectories.
    • Acceleration rate was independent of the beam's spatial scale.

    Conclusions:

    • Novel bending STWPs with symmetric profiles were successfully created.
    • These beams offer precise control over light's curved path.
    • Opens new avenues for target-avoidance with electromagnetic waves.