We show that three-dimensional incoherent primary sources can be
reconstructed from finite-aperture Fresnel-zone mutual intensity
measurements by means of coordinate and Fourier transformation. The
spatial bandpass and impulse response for three-dimensional imaging
that result from use of this approach are derived. The transverse
and longitudinal resolutions are evaluated as functions of aperture
size and source distance. The longitudinal resolution of
three-dimensional coherence imaging falls inversely with the square of
the source distance in both the Fresnel and Fraunhofer zones. We
experimentally measure the three-dimensional point-spread function by
using a rotational shear interferometer.
© 1999 Optical Society of America
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