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    Area of Science:

    • Optics and Photonics
    • 3D Imaging Technologies
    • Holography

    Background:

    • Interferenceless-coded aperture correlation holography (I-COACH) is a single-shot 3D imaging technique.
    • Conventional coded phase mask (CPM) methods in I-COACH suffer from intensity dilution, leading to low-resolution reconstructions.

    Purpose of the Study:

    • To propose a new encoding method for I-COACH to overcome resolution limitations.
    • To enhance the quality of point spread holograms (PSHs) for improved 3D reconstruction.

    Main Methods:

    • Utilizing accelerating quad Airy beams with four mainlobes as the point response in I-COACH.
    • Leveraging the weak diffraction propagation and sharp transverse intensity maximum of these beams.
    • Exploiting the lateral acceleration of the beams in 3D space to create unique PSHs.

    Main Results:

    • Achieved high-resolution reconstruction in I-COACH.
    • Demonstrated unique and concentrated intensity distributions of PSHs at different axial positions.
    • Showcased superior performance compared to conventional CPM encoding methods.

    Conclusions:

    • The proposed accelerating quad Airy-beam-encoding method significantly improves I-COACH resolution.
    • This approach offers enhanced performance even under external interference conditions.
    • Enables more accurate and detailed 3D imaging with I-COACH.