Abstract

An improved phase coding in computer generated holography can be obtained through a modification of usual methods; the holograms proposed here, with three apertures per sampling cell, are shown to present a correct phase coding although at the cost of a loss in computation time as compared to other methods. Three possible implementation procedures are discussed. Comparison is made with Lohmann-type holograms and experimental results are shown to agree with theory.

© 1976 Optical Society of America 989

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