title: Improved-fidelity error diffusion through blending with pseudorandom encoding
abstract: Error diffusion (ED) and pseudorandom encoding (PRE) methods of designing Fourier transform holograms are compared in terms of their properties and the optical performance of the resulting far-field diffraction patterns. Although both methods produce a diffuse noise pattern due to the error between the desired fully complex pattern and the encoded modulation, the PRE errors reconstruct uniformly over the nonredundant band-width of the discrete-pixel spatial light modulator, while the ED errors reconstruct outside the window of the designed diffraction pattern. Combining the two encoding methods produces higher-fidelity diffraction patterns than either method produces individually. For some designs the fidelity of the ED-PRE algorithm is even higher over the entire nonredundant bandwidth than for the previously reported [J. Opt. Soc. Am. A 16, 2425 (1999)] minimum-distance-PRE algorithm.
authors.affiliation: The ElectroOptics Research Institute, University of Louisville, Kentucky 40292, USA.
authors.initials: L
authors.lastname: Ge
authors.initials: M
authors.lastname: Duelli
authors.initials: RW
authors.lastname: Cohn