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    Summary
    This summary is machine-generated.

    We developed a new method for controlling illumination coherence in microscopy using a digital micromirror device (DMD) projector. This technique enables fast, switchable multi-wavelength and spatial coherence designs for improved quantitative phase imaging (QPI).

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    Area of Science:

    • Optical microscopy
    • Coherent imaging techniques

    Background:

    • Partially coherent illumination offers benefits like speckle-free imaging and improved optical sectioning.
    • Accurate quantitative phase imaging (QPI) relies on understanding spatial and temporal coherence for analyzing specimens like live cells.

    Purpose of the Study:

    • To introduce a novel technique for illumination coherence engineering.
    • To enable fast, switchable control over multi-wavelength and spatial coherence properties.

    Main Methods:

    • Utilized a digital micromirror device (DMD) projector for illumination control.
    • Implemented fast switching capabilities for multi-wavelength and spatial coherence adjustments.

    Main Results:

    • Demonstrated the technique's performance experimentally for QPI.
    • Showcased QPI with various spatial coherence states using the proposed method.

    Conclusions:

    • The proposed DMD-based technique offers effective illumination coherence engineering.
    • This method provides a versatile platform for advanced QPI applications.