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Space-time wave packets with both arbitrary transverse and longitudinal accelerations.

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    This study introduces a new computational model for creating space-time wave packets (STWPs) with controllable transverse and longitudinal accelerations. The research advances the development of non-diffracting structured light fields.

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    Area of Science:

    • Optics and Photonics
    • Theoretical Physics

    Background:

    • Conventional space-time wave packets (STWPs) and light bullets allow control over longitudinal group velocity.
    • Existing regulation strategies are limited to the longitudinal dimension.

    Purpose of the Study:

    • To propose a computational model for devising STWPs with arbitrary transverse and longitudinal accelerations.
    • To investigate the properties of attenuation-free Pearcey-Gauss STWPs.

    Main Methods:

    • Utilizing catastrophe theory for computational modeling.
    • Developing a model to control both transverse and longitudinal accelerations of STWPs.

    Main Results:

    • Demonstrated the ability to engineer STWPs with independent transverse and longitudinal accelerations.
    • Introduced the attenuation-free Pearcey-Gauss STWP, a novel non-diffracting STWP.

    Conclusions:

    • The proposed model enables flexible control over STWP propagation dynamics.
    • This work expands the family of non-diffracting STWPs and advances structured light field development.