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Quantitative phase and refractive index imaging of 3D objects via optical transfer function reshaping.

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    We present a novel method extending 2D deconvolution phase microscopy to 3D samples. This technique reconstructs refractive index distributions and optical phase delays in thick specimens using optimized illumination.

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    Area of Science:

    • Biophysics
    • Optical Imaging
    • Microscopy

    Background:

    • Deconvolution phase microscopy offers high-contrast imaging of transparent samples.
    • Current methods are limited to 2D reconstructions, restricting analysis of complex biological structures.

    Purpose of the Study:

    • To extend 2D deconvolution phase microscopy to visualize thick 3D samples.
    • To enable quantitative phase and refractive index mapping in three dimensions.

    Main Methods:

    • Developed a novel approach to extend 2D deconvolution phase microscopy to thick 3D samples.
    • Utilized four intensity images with optimized illumination patterns to reconstruct refractive index distribution at specific axial planes.
    • Employed different illumination patterns to measure optical phase delay.

    Main Results:

    • Successfully demonstrated the extension of deconvolution phase microscopy to 3D samples.
    • Achieved reconstruction of refractive index distribution within thick specimens.
    • Enabled measurement of optical phase delay for comprehensive sample characterization.

    Conclusions:

    • The proposed method significantly advances deconvolution phase microscopy capabilities for 3D imaging.
    • This technique provides a powerful tool for high-contrast, quantitative analysis of transparent 3D biological samples.
    • Opens new avenues for studying complex structures and dynamics in thick specimens.