Error-diffusion multilevel phase encoded CGH elements

David P. Casasent; Frans M. Coetzee

doi:10.1117/12.23396

27 December 1990 Error-diffusion multilevel phase encoded CGH elements

David P. Casasent, Frans M. Coetzee

Proceedings Volume 1347, Optical Information Processing Systems and Architectures II; (1990) https://doi.org/10.1117/12.23396
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

Error-diffusion computer-generated holograms (CGHs) are extended to allow the use of multilevels (rather than the conventional binary 0,1 values) and to phase modulation (to improve efficiency). These new CGHs allow high accuracy and reduced space-bandwidth-product transfer functions. CGHs for optical processing operations are described and laboratory data are included.

Citation Download Citation

David P. Casasent and Frans M. Coetzee "Error-diffusion multilevel phase encoded CGH elements", Proc. SPIE 1347, Optical Information Processing Systems and Architectures II, (27 December 1990); https://doi.org/10.1117/12.23396

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