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We report a quantitative differential interference contrast (DIC) microscope based on a structured-aperture (SA) wavefront sensor. Unlike a conventional DIC microscope, the SA-DIC microscope can separate the amplitude and the phase gradient information of the image wavefront, and form quantitative intensity and DIC images of the sample with good resolution; our prototype achieved resolution ∼2 μm. Furthermore, due to the nonpolarization nature of the microscope, we were able to image birefringent samples without artifacts.
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Cui et al. (2008) studied this question.
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