Offset Plate Research Articles

Fourier-Transform Holograms by Fresnel Zone-Plate Achromatic-Fringe Interferometer*

Fourier-transform holograms are produced by using achromatic-fringe interferometer arrangements in which the beam splitting is achieved by offset Fresnel zone plates. The effects of the size and the spectral bandwidth of the spatially incoherent source are discussed. Coherence requirements of the source are the same as those for in-line holograms. Experimental examples with object transparencies and a high-pressure mercury-arc lamp are given.