Opt Lett. 2018 Sep 15;43(18):4469-4472. doi: 10.1364/OL.43.004469.
An algorithm for quantitative reconstruction of the optical thickness distribution of objects is proposed based on single-shot dual-wavelength in-line digital holography. Two single-wavelength holograms can be extracted from a single-shot recorded dual-wavelength in-line hologram. The quantitative optical thickness distribution of the specimen can be reconstructed directly without calculations of the phase images at every single wavelength. Thus, off-axis recording and phase-shifting operation are not required, enabling a fast and high-resolution measurement. The effectiveness and accuracy of the proposed method are verified by both numerical simulations and experimental results.
提出了一种基于单次双波长共线数字全息术的定量重建物体光学厚度分布的算法。从单次记录的双波长共线全息图中可以提取出两个单波长全息图。无需计算每个单波长的相位图像，即可直接重建样品的定量光学厚度分布。因此，不需要离轴记录和相移操作，实现了快速和高分辨率的测量。通过数值模拟和实验结果验证了所提出方法的有效性和准确性。
