In holographic display, the reconstructed image suffers from speckle noise severely. In this paper, we propose a method to suppress speckle noise using time multiplexing in phase‐only holographic display. Adjacent pixels of the recorded object are separated into object point groups firstly. Particularly, the pixel interval of each object point group is larger compared with the conventional pixel separation method. And then, sub‐computer–generated holograms (sub‐CGHs) are calculated by the modified Gerchberg–Saxton (GS) algorithm with different initial random phases. Finally, the final integrated image is reconstructed with low speckle noise using time multiplexing technique. Both numerical and optical experimental results are presented to demonstrate the effectiveness and feasibility with our proposed method.

中文翻译：

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仅相位全息显示中使用时间复用抑制斑点噪声的方法

在全息显示中，重建图像严重受到斑点噪声的影响。在本文中，我们提出了一种在纯相位全息显示中使用时间复用来抑制斑点噪声的方法。首先将记录对象的相邻像素分为对象点组。特别地，与传统的像素分离方法相比，每个对象点组的像素间隔更大。然后，用改进的Gerchberg-Saxton（GS）算法计算具有不同初始随机相位的子计算机生成的全息图（sub-CGH）。最后，使用时分复用技术以低斑点噪声重建最终的集成图像。数值和光学实验结果均被证明以证明我们提出的方法的有效性和可行性。