Gopakumar Manu, Kim Jonghyun, Choi Suyeon, Peng Yifan, Wetzstein Gordon
Opt Lett. 2021 Dec 1;46(23):5822-5825. doi: 10.1364/OL.442851.
Computer-generated holography suffers from high diffraction orders (HDOs) created from pixelated spatial light modulators, which must be optically filtered using bulky optics. Here, we develop an algorithmic framework for optimizing HDOs without optical filtering to enable compact holographic displays. We devise a wave propagation model of HDOs and use it to optimize phase patterns, which allows HDOs to contribute to forming the image instead of creating artifacts. The proposed method significantly outperforms previous algorithms in an unfiltered holographic display prototype.
计算机生成全息术存在由像素化空间光调制器产生的高衍射级次（HDOs）问题，必须使用庞大的光学器件进行光学滤波。在此，我们开发了一种算法框架，用于在不进行光学滤波的情况下优化HDOs，以实现紧凑的全息显示。我们设计了HDOs的波传播模型，并使用它来优化相位图案，这使得HDOs能够有助于形成图像而不是产生伪像。在未滤波的全息显示原型中，所提出的方法显著优于先前的算法。
