Speckle Noise-Free Interconnective Holographic Projection

Generally, speckle noise is regarded as unavoidable in holographic projection, and it results from unexpected high spatial frequency components of diffracted light at the sharp edge pixel openings a modulator. Speckle typically reduces image contrast degrades quality projection. In this study, we propose novel optical interconnection method free This achieved by using element (HOE). The HOE designed to reconstruct Gaussian beams with low divergence. These become points which form target images desired depths. Since beam does not share same position other beams, there no interference projection image. Therefore, composed reason for appear on paper, fabricate HOE, produced our specially manufactured hologram printer, where directions two divergence are controlled goniometers. We experimentally demonstrated noise-free interconnective Two successfully formed different depths optically connecting pairs.