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    Low-coherence off-axis digital holographic microscopy

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    Type
    Preprint
    Authors
    Perrin, Stephane
    Kuhn, Jonas
    Depeursinge, Christian
    KAUST Department
    Biological and Environmental Science and Engineering (BESE) Division
    Date
    2021-11-01
    Permanent link to this record
    http://hdl.handle.net/10754/673097
    
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    Abstract
    Usually, off-axis digital holographic microscopy requires a coherent light source in order to record a full-field hologram. Nevertheless, a LASER-based illumination leads to a non-negligible coherent noise, decreasing then the imaging quality. We hereby report a simple method to reduce the coherent noise contribution using a low-temporal-coherence illumination while maintaining a large interference area. A diffraction grating is hence introduced in the reference arm of the interferometer, allowing the coherence plane of the reference beam to be tilted following angular dispersion. The phase planes of the reference beam and the object beam appears to be coplanar. The principle and performance of low-coherence off-axis digital holographic microscopy are demonstrated. The three-dimensional reconstruction of a biological sample is performed.
    Sponsors
    This research was funded by the Swiss National Science Foundation (SNSF) and has been supported by King Abdullah University of Science and Technology. This work has been made in collaboration with the Microvision Microdiagnostic Group of the Ecole Polytechnique Federale de Lausanne and Lyncee Tec SA.
    Publisher
    arXiv
    arXiv
    2111.00815
    Additional Links
    https://arxiv.org/pdf/2111.00815.pdf
    Collections
    Biological and Environmental Science and Engineering (BESE) Division; Preprints

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