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Designing multiplane computer-generated holograms with consideration of the pixel shape and the illumination wave

: Kämpfe, T.; Kley, E.-B.; Tünnermann, A.


Journal of the Optical Society of America. A, Optics, image science, and vision 25 (2008), No.7, pp.1609-1622
ISSN: 1084-7529
ISSN: 0740-3232
ISSN: 1520-8532
Journal Article
Fraunhofer IOF ()
diffractive optical element; image encryption; phase element; fabrication; plane

The majority of image-generating computer-generated holograms (CGHs) are calculated on a discrete numerical grid, whose spacing is defined by the desired pixel size. For single-plane CGHs the influence of the pixel shape and the illumination wave on the actual output distribution is minor and can be treated separately from the numerical calculation. We show that in the case of multiplane CGHs this influence is much more severe. We introduce a new method that takes the pixel shape into account during the design and derive conditions to retain an illumination-wave-independent behavior.