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Updated: Feb 12, 2026

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
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    Researchers developed a novel sensor using lithium niobate Fresnel zone plates to detect light intensity and wavefront. This device offers a single-camera solution for advanced optical measurements.

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    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Traditional wavefront sensors often require multiple components or cameras.
    • Accurate measurement of both intensity and wavefront is crucial in optical systems.

    Purpose of the Study:

    • To introduce a versatile optical sensor capable of simultaneously measuring light intensity and wavefront.
    • To demonstrate the efficacy of electrically controllable Fresnel zone plates in lithium niobate for wavefront sensing.

    Main Methods:

    • Fabrication of electrically controllable Fresnel zone plates using ferroelectric domains in lithium niobate.
    • Integration of these zone plates into a single-camera system for adaptable intensity and phase detection.
    • Comparison of ring-shaped and hexagonal domain arrays for sensor performance.

    Main Results:

    • The developed sensor successfully detects both intensity distribution and wavefront of incident waves.
    • The use of hexagonal domains in lithium niobate enables smaller zone plates, increasing sensor density and improving wavefront reconstruction fidelity.
    • The sensor can be rapidly switched between intensity- and phase-detecting modes using a single camera.

    Conclusions:

    • The lithium niobate Fresnel zone plate sensor offers a compact and efficient alternative to conventional Shack-Hartmann sensors.
    • Hexagonal domain structures in lithium niobate are advantageous for creating high-density, high-performance wavefront sensors.
    • This technology has potential applications in adaptive optics, imaging, and optical metrology.