Abstract

High-efficiency phase-only computer-generated holograms (CGH’s) were produced expediently and inexpensively by a color-encoded discrete-phase-level process. Computer-generated-hologram gray levels were mapped to color with a high-resolution color printer, and color was mapped to phase by a broad-spectral-sensitivity high-resolution black-and-white film. Experimental results illustrating color-to optical-density and color-to-phase mapping are presented for Kodak 649F film. A variety of optical interconnection elements exhibiting high diffraction efficiencies and high contrast ratios for both on- and off-axis performance were fabricated by this technique. Typical experimental results are presented.

© 1994 Optical Society of America

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