Digital holographic microscopy (DHM) has been used in numerous successful studies in materials and life sciences. It is well known that the light source coherence, useful to generate high-quality interference patterns that encode the phase in an extremely accurate manner, generates coherent noise (CN), which precludes to adequately address some important applications, especially when single-shot fast recording is required. We propose an original approach, called polychromatic DHM, which thanks to the reconstruction of several holograms acquired at different wavelengths provides quasi-CN-free optical path difference images. Preliminary results concerning materials and life sciences will be presented.
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