Computer-generated holograms by means of a magnetooptic spatial light modulator.
A magnetooptic spatial light modulator is used to reconstruct computer-generated Fourier holograms. Different methods for designing the holgrams are considered including binary and complex quantization in conjunction with an iterative algorithm, carrier techniques, phase manipulations, and cell oriented binary coding. The limitations of binary quantization are discussed, and the trade-offs between space-bandwidth and quantization error are considered. Using a device having an array of 48 x 48 elements the best compromise is achieved using carrier techniques in conjunction with phase manipulations and binary quantization.
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