Abstract
The single-sideband method of holography, as is well known, cuts
off beams that come from conjugate images for holograms produced in the
Fraunhofer region and from objects with no phase components. The
single-sideband method with half-zone-plate processing is also
effective in the Fresnel region for beams from an object that has phase
components. However, this method restricts the viewing zone to a
narrow range. We propose a method to improve this restriction by
time-alternating switching of hologram patterns and a spatial filter
set on the focal plane of a reconstruction lens.
© 1999 Optical Society of America
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