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Appl Opt. 1995 Jun 10;34(17):3165-71. doi: 10.1364/AO.34.003165.

Speckle-noise reduction on kinoform reconstruction using a phase-only spatial light modulator.


Random-phase distributions that are statistically independent individually are used for computing kinoforms. These uncorrelated kinoforms are recorded and read out sequentially by a phase-only liquid-crystal spatial light modulator, and reconstructed images with well-developed speckles are added. The fidelity of the resultant image to an original is improved as the number of additions increases. The dependence of the speckle contrast on the initial random phase and the influence of the liquid-crystal spatial light modulator's display performance on the image quality are discussed.

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