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
Pierre Chavel and Jean-Paul Hugonin, "High quality computer holograms: The problem of phase representation," J. Opt. Soc. Am. 66, 989-996 (1976)