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(a) recorded off-axis hologram (white line is 500μm in CCD plane), (b) filter to remove the twin image and zero-order noise, (c) Fourier transformation of the off-axis hologram, (d) the filtered off-axis hologram in the Fourier domain, (e) amplitude image; the intensity is adjusted for the best visualization, and (f) the contrast phase image after numerical reconstruction (red line is 10μm in the image plane).
