DIFFRACTION EFFICIENCY OF ANALOG AND QUANTIZED DIGITAL AMPLITUDE HOLOGRAM - ANALYSIS AND MANIPULATION

The diffraction efficiency tiof analog and quantized amplitude holograms is treated. Possible ways to manipulate η are discussed in terms of utilization of different kinds of freedom in the reconstructed field. Iterative methods to increase η are suggested, and experimental results are presented. The methods are based on iterative Fouriertransform algorithms. Results of iterative and noniterative quantization techniques are compared with respect to their dependence on the original analog hologram. © 1990 Optical Society of America.