Abstract
We present a speckle reduction method to generate phase holograms with high-quality optical reconstruction based on optimized phase modulation. An initial phase with continuous and band-limited spectrum is utilized to iteratively optimize the phase modulation in the image plane. The optimized phase is used to modulate the object wave field, and the phase hologram is then calculated from the modulated object wave field. Phase distribution of the reconstructed image with our method is smoothly distributed and contains less phase singularities, which helps to reduce speckle noise in optical reconstruction. The proposed method can improve the reconstruction quality effectively, and eliminate the speckle noise induced by the random diffuse phase.
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