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A well-known speckle which comes from the coherent property of laser source has limited the laser imaging application. Quantitative Phase Imaging (QPI) also suffers from this speckle noise when illuminate with coherent source. A rotational diffuser is a considerable method to minimize the speckle by averaging the speckle contrast in time. Here, we employ the dual optical diffuser-static and moving...
Many imaging applications required laser level brightness for high speed and sensitive imaging. However, high spatial coherence of the laser causes the speckle noise which covers up the information present in the images. Therefore, there have been many attempts for reducing speckle noise, e.g. using random lasers, diffractive optical elements, and spatial sampling, but most of those are complicated...
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