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Updated: Jan 22, 2026

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Polarization-insensitive tunable terahertz polarization rotator.

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    This study introduces a novel all-dielectric metasurface doublet capable of rotating light polarization by any angle. This versatile device offers precise polarization and phase control for optical applications.

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    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Metasurfaces offer advanced control over light polarization.
    • Existing polarization rotators often lack angular tunability or are bulky.

    Purpose of the Study:

    • To propose and demonstrate a rotation-angle variable polarization rotator.
    • To achieve arbitrary polarization rotation using an all-dielectric metasurface.

    Main Methods:

    • Utilized an all-dielectric metasurface doublet.
    • Mechanically adjusted the relative angle between metasurface layers.

    Main Results:

    • Demonstrated a transmissive polarization rotator with angle-variable functionality.
    • Achieved polarization rotation independent of incident polarization state.
    • Showcased potential as a full phase modulator for circularly polarized light.

    Conclusions:

    • The proposed metasurface doublet provides a versatile platform for polarization and phase control.
    • This device has promising applications in optical systems requiring tunable polarization manipulation.