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    We developed a novel liquid crystal (LC) grating for optical polarization measurements. This LC grating enables simultaneous acquisition of multiple polarization parameters, demonstrating feasibility as a Stokes polarimeter.

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    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Polarization measurement is crucial for optical applications.
    • Traditional polarimeters can be complex and bulky.
    • Liquid crystal (LC) gratings offer tunable optical properties.

    Purpose of the Study:

    • To propose and demonstrate a novel liquid crystal grating for optical polarization measurements.
    • To investigate the use of a ternary orientation domain for simultaneous polarization parameter acquisition.
    • To evaluate the performance of the LC grating as a Stokes polarimeter.

    Main Methods:

    • Fabrication of a liquid crystal grating with a ternary orientation domain.
    • Experimental investigation of LC molecular orientation and diffraction efficiency.
    • Characterization of the LC grating as a Stokes polarimeter for determining Stokes parameters (S0, S1, S2, S3).

    Main Results:

    • The proposed LC grating exhibits two-dimensional diffraction properties.
    • Simultaneous acquisition of multiple polarization parameters was achieved.
    • The feasibility of the LC grating as a Stokes polarimeter was experimentally demonstrated for linearly and circularly polarized light.

    Conclusions:

    • The developed liquid crystal grating is a viable component for Stokes polarimetry.
    • The ternary orientation domain is key to simultaneous polarization measurement.
    • The study validates the practical application of LC gratings in optical polarization analysis.