Shen Chuan, Qi Yifei, Lv Shiqi, Wang Bin, Wei Sui
Appl Opt. 2022 Feb 20;61(6):1507-1515. doi: 10.1364/AO.449555.
The random phase method and quadratic phase method are most widely used in the generation of non-iterative phase holograms. However, the former leads to the reconstruction being severely disturbed by speckle noise, with serious loss of detailed information, and the latter leads to the reconstruction being contaminated with ringing artifacts. To solve these problems, we present a novel, to the best of our knowledge, method capable of generating non-iterative phase holograms, hereafter referred to as hybrid-phase-only holograms (HPOHs). Our proposal is to use a weight factor to combine the random phase and quadratic phase to generate a hybrid phase mask. The hybrid phase mask is then superimposed on the target image to obtain a complex hologram by simple Fourier transform. Followed by retaining the phase of the complex hologram, we can generate the corresponding HPOH. The effects of different weight factors on the holographic reconstructions are discussed. Numerical simulations of reconstruction quality associated with the proposed method, random phase method, and quadratic phase method are presented for comparison purposes. Optical experiments based on liquid crystal on silicon also demonstrate the validity of the method.
随机相位法和二次相位法在非迭代相位全息图的生成中应用最为广泛。然而，前者会导致重建受到散斑噪声的严重干扰，详细信息严重丢失，而后者会使重建受到振铃伪影的污染。为了解决这些问题，据我们所知，我们提出了一种能够生成非迭代相位全息图的新方法，以下简称混合纯相位全息图（HPOH）。我们的建议是使用一个权重因子来组合随机相位和二次相位，以生成一个混合相位掩模。然后将混合相位掩模叠加在目标图像上，通过简单的傅里叶变换获得一个复全息图。保留复全息图的相位后，我们就可以生成相应的HPOH。讨论了不同权重因子对全息重建的影响。为了进行比较，给出了与所提方法、随机相位法和二次相位法相关的重建质量的数值模拟。基于硅基液晶的光学实验也证明了该方法的有效性。
