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    Area of Science:

    • Photonics
    • Liquid Crystal Displays
    • Optical Engineering

    Background:

    • Super-resolution imaging requires advanced optical components for enhanced resolution.
    • Traditional gratings often lack tunability and fast switching capabilities.
    • Ferroelectric liquid crystals (FLCs) offer fast electro-optic response times.

    Purpose of the Study:

    • To develop a low-voltage, fast-switchable 1D and 2D Fibonacci grating (FbG) for super-resolution imaging.
    • To achieve high diffraction efficiency and polarization independence.
    • To demonstrate the FbG's capability for high-resolving power in far-field detection.

    Main Methods:

    • Utilized electrically suppressed helix ferroelectric liquid crystal (ESHFLC) material.
    • Designed a polarization-independent two-domain (0, π) structure using photoalignment technology.
    • Fabricated 1D and 2D Fibonacci gratings.

    Main Results:

    • Achieved a maximum total diffraction efficiency of 97.4% (1st order: 8.5%, 2nd order: 30%).
    • Demonstrated tunable states (non-diffractive and diffractive) with a fast switching speed of 103µs at 4V.
    • Attained a high-resolving power of (λ/2.25) for object detection in the far-field.

    Conclusions:

    • The ESHFLC-FbG is a promising candidate for super-resolution imaging systems.
    • The quasi-periodic nature of FbG enables translation of super-resolution information to the far-field.
    • Potential applications include superstructure fiber sensors and other photonic devices.