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Application of the two-dimensional fractional-order Fourier transformation to particle field digital holography

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Abstract

We demonstrate that the fractional-order Fourier transformation is a suitable method to analyze the diffraction patterns of particle field holograms. This method permits reconstruction of in-line digital holograms beyond the Fraunhofer condition (d2/λz10). We show that the diameter of spherical particles is measured with good accuracy. Simulation and experimental results are presented.

© 2002 Optical Society of America

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