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Phase Contrast and Differential Interference Contrast Microscopy01:26

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Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects
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Single-plane and multiplane quantitative phase imaging by self-reference on-axis holography with a phase-shifting

Nathaniel Hai, Joseph Rosen

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    Summary

    This study introduces a novel quantitative phase imaging method using self-reference holography for more accurate wavefront mapping. The technique offers reduced noise and efficient phase recovery, applicable to metrology and bio-imaging.

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    Area of Science:

    • Optical Physics
    • Metrology
    • Bio-imaging

    Background:

    • Quantitative phase imaging (QPI) is crucial for label-free visualization of transparent specimens.
    • Standard interferometric methods often face limitations in accuracy, noise, and complexity.

    Purpose of the Study:

    • To develop a new, more accurate quantitative phase imaging approach.
    • To improve phase map accuracy and reduce noise in holographic interferometry.

    Main Methods:

    • A self-reference holography technique is proposed, superposing three on-axis interferograms.
    • Phase filtering and a rapid phase contrast-based retrieval algorithm are employed.
    • Online qualitative phase imaging is performed without optical reconfiguration.

    Main Results:

    • The superposition method yields a more accurate phase map compared to off-axis interferometry.
    • Reduced temporal noise levels were observed in the quantitative phase maps.
    • Efficient phase recovery was demonstrated for both optically thin and thick transmissive objects.

    Conclusions:

    • The proposed framework provides a robust and accurate QPI method.
    • Its applicability spans diverse fields including metrology and bio-imaging.
    • The system enables multiplane quantitative phase mapping from a single exposure with no moving parts.