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We report a simple setup for two-step quadrature phase-shifting holography that could be useful and suitable for industrial applications. Only two on-axis holograms are captured with the system and a complex hologram is formed from the two holograms. Autocorrelation is used to quantify the quality of all the reconstructed images from the holograms. We have tested a transparent sample as well as a...
We propose a method to combine two phase-shifted holograms into a complex hologram. The reconstruction of the complex hologram will have no twin image noise but have a constant zeroth-order beam, which could be attenuated by subsequent optical filtering of the reconstructed image.
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