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Single-shot phase-shifting digital holography based on the spatial carrier interferometry

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Phase-shifting digital holography which is available simply with single-shot exposure of holograms without any special phase-shifting device is proposed. A key point of the present method is phase-shifting property in three or four moiré patterns obtained from single holograms with a large spatial carrier by sampling sparsely in a computer. Theoretical analysis is performed for demonstrating the phase-shifting property of these sparsely-sampled hologram patterns from the single hologram. Limits of a carrier frequency, i.e., amount of tilting angle of the reference plane wave used in recording holograms, and a phase slope of the object wave to be reconstructed are also given by theoretical analysis. Numerical simulations are conducted for demonstrating the validity and the limits of the proposed method.

© 2011 Optical Society of America

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