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A general method is described that permits demonstration that only three different array illuminators based on the Talbot effect can be produced.
The theory of lensless formation of multiple images from a single object by Fresnel-Dirac sampling is reexamined. It is concluded that the multiple-image formation does not really occur in principle. However, reasonably good image arrays can be obtained if the sampling filter is properly designed. These image arrays appear when the reduced length Q… (More)
In this paper we suggest that a one-dimensional grating may be employed in place of the random diffuse screen and slit used in one-step, two-dimensional rainbow holography. A demonstration of this slitless rainbow holography is given by means of Fourier optics. Holograms fabricated in this manner in a 4f-like processing system prove to be satisfactory. This… (More)