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arXiv 1909.01173physics.opticseess.IV
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数字全息中动态物体的四维相位展开

Four dimensional phase unwrapping of dynamic objects in digital holography

Gili Dardikman, Gyanendra Singh, Natan T. Shaked

摘要:

我们提出了一种新的四维相位展开方法的时间推移定量相位显微镜,它允许重建的光学厚的物体,光学薄在一定的时间点和角度的看法。因此,我们使用所获取的动态定量相位分布的所有四个维度,除了x-y维度之外,还包括角度维度和时间维度。我们首先展示了这种算法在模拟数据上的能力,使重建质量相对于地面实况和现有的展开方法的量化成为可能。然后,我们证明了所提出的四维相位展开算法的适用性,通过实验捕获的双角度动态离轴全息图,同时记录两个角度的意见,使用复用的两个离轴全息图成一个单一的复用全息图。

英文摘要:

We present a new four-dimensional phase unwrapping approach for time-lapse quantitative phase microscopy, which allows reconstruction of optically thick objects that are optically thin in a certain temporal point and angular view. We thus use all four dimensions of the dynamic quantitative phase profile acquired, including the angular dimension and the temporal dimension, in addition to the x-y dimensions. We first demonstrate the capabilities of this algorithm on simulative data, enabling the quantification of the reconstruction quality relative to both the ground truth and existing unwrapping approaches. Then, we demonstrate the applicability of the proposed four-dimensional phase unwrapping algorithm by experimentally capturing a dual-angular dynamic off-axis hologram with simultaneous recording of two angular views, using multiplexing of two off-axis holograms into a single multiplexed hologram.

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