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    Researchers created versatile optical beam shapers using plasmonic metasurfaces. These devices can switch between various laser beam shapes, enabling new possibilities for integrated optical systems.

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    Area of Science:

    • Optics and Photonics
    • Materials Science
    • Nanotechnology

    Background:

    • Traditional optical systems often require multiple components to generate different laser beam shapes.
    • Plasmonic metasurfaces offer a platform for miniaturizing and integrating optical functionalities.
    • Developing multifunctional optical elements is crucial for advanced photonic applications.

    Purpose of the Study:

    • To develop and demonstrate multifunctional optical beam shapers.
    • To enable switching between arbitrary laser beam shapes using a single element.
    • To explore the potential of plasmonic metasurfaces for integrated optics.

    Main Methods:

    • Fabrication of plasmonic metasurfaces composed of subwavelength-spaced nanoantennas.
    • Design of polarization- and wavelength-selective optical nanoantennas.
    • Numerical simulations and experimental validation of beam shaping capabilities.

    Main Results:

    • Demonstrated a single plasmonic metasurface capable of generating multiple beam shapes.
    • Successfully switched between one-dimensional Airy and Gaussian beams.
    • Showcased switching between different orders of Hermite-Gaussian beams.
    • Presented switching between two-dimensional Airy and Bessel beams.

    Conclusions:

    • Multifunctional optical beam shapers based on plasmonic metasurfaces are feasible.
    • These devices offer a compact and versatile solution for applications requiring multiple beam shapes.
    • The developed technology has potential applications in integrated photonics and laser systems.