Programmable joint fractional Talbot computer-generated holograms
- 1 February 1995
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America A
- Vol. 12 (2) , 314-324
- https://doi.org/10.1364/josaa.12.000314
Abstract
Multilevel phase holograms can be obtained from the combination of two binary phase-only holograms set up in a fractional joint Talbot configuration. Among possible solutions, the quarter-Talbot location is of particular interest because it permits the generation of four-level phase holograms from the combination of two binary{0, π} phase holograms. At the same time recent advances in electrically addressed ferroelectric liquid-crystal spatial light modulators for producing binary pure phase-only holograms make possible the implementation of programmable high-diffraction-efficiency computer-generated holograms. An extension of computer generation of holograms is proposed that includes spatial constraints related to the fractional Talbot effect.Keywords
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