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Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution
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THz coherent lensless imaging.

Lorenzo Valzania, Yuchen Zhao, Lu Rong

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    Summary
    This summary is machine-generated.

    Coherent lensless imaging reconstructs terahertz (THz) radiation responses using minimal equipment. This review details THz digital holography and phase retrieval, advancing imaging science.

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    Area of Science:

    • Terahertz (THz) science and technology
    • Coherent imaging techniques
    • Optical physics

    Background:

    • Terahertz (THz) radiation imaging is crucial for science and industry.
    • Coherent lensless imaging offers a simplified approach to THz imaging.

    Purpose of the Study:

    • To review coherent lensless imaging techniques for THz radiation.
    • To detail THz digital holography and phase retrieval principles and implementations.
    • To highlight the cross-disciplinary utility of THz imaging innovations.

    Main Methods:

    • Review of THz sources and detectors.
    • Detailed explanation of THz digital holography.
    • Explanation of THz phase retrieval algorithms.

    Main Results:

    • Coherent lensless imaging reconstructs sample responses with minimal setup.
    • Established THz digital holography and phase retrieval methods are presented.
    • Innovative THz imaging concepts with potential for other spectral ranges are discussed.

    Conclusions:

    • Coherent lensless imaging provides a powerful, simplified method for THz imaging.
    • Innovations in THz imaging can benefit other spectral imaging fields.
    • This review encourages interaction between THz and broader imaging communities.