In this paper, color optimization of a full-color holographic stereogram printing system using a single SLM based on iterative exposure is proposed. First, an array of sub-holograms (hogels) is generated effectively within fast computergenerated integral imaging, and fully analyzed phase-modulation for red, green, and blue (RGB) channels of hogel. Then, the generated hogels are recorded into holographic material sequentially where SLM displays the R, G, and B channels of a single hogel via effectual exposure under synchronized control with three electrical shutters for RGB laser illumination to obtain verified color optimization. Numerical simulation and optical reconstructions are implemented.
In this paper, A full-color Denisyuk-type hologram using photopolymer has been recorded by the sequential exposure method. The photopolymer's optical characteristics show that inhibition periods of the photopolymer at three lasers are different in the same beam intensity. To increase the average diffraction efficiency of a full-color holographic optical element (HOE), the three lasers should be sequentially exposed to the photopolymer. The experimental results show that the average efficiency of a full-color reflection HOE is 59.6% and the standard deviation is 2.1. Also, the full-color hologram recorded in a one-layer photopolymer can reconstruct a high-quality image.
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