Zheng Huadong, Zhou Chaojun, Shui Xinghua, Yu Yingjie
Appl Opt. 2022 Feb 10;61(5):B262-B270. doi: 10.1364/AO.444756.
Depth-division multiplexing (DDM) is a common method for full-color hologram generation. However, this method will result in uneven image-quality levels at different color channels of the original color image. In this paper, the DDM method with dynamic compensation is proposed for a full-color holographic display. Three monochromatic images of red (R), green (G), and blue (B) channels from the original color image are placed orderly at different positions (object planes) of the same optical axis; then, the complex amplitudes of the three object planes are iteratively updated in a designed order when a laser wavefront propagates between object planes and the hologram plane. In the iterative process, a dynamic compensation factor is added to the complex amplitude of each object plane, which can effectively balance the quality level of the reconstructed image in each color channel. As a result, the image quality of a full-color object is improved. Numerical simulation and optical experiments are carried out to verify the method's feasibility.
深度分割复用（DDM）是生成全彩色全息图的常用方法。然而，该方法会导致原始彩色图像不同颜色通道的图像质量水平不均匀。本文提出了一种用于全彩色全息显示的具有动态补偿的DDM方法。将原始彩色图像的红（R）、绿（G）和蓝（B）通道的三幅单色图像按顺序放置在同一光轴的不同位置（物平面）；然后，当激光波前在物平面和全息图平面之间传播时，按设计顺序迭代更新三个物平面的复振幅。在迭代过程中，在每个物平面的复振幅上添加一个动态补偿因子，这可以有效地平衡每个颜色通道中重建图像的质量水平。结果，全彩色物体的图像质量得到了提高。进行了数值模拟和光学实验以验证该方法的可行性。
