Generalized phase-shifting interferometry with arbitrary unknown phase steps for diffraction objects.
Generalized phase-shifting interferometry with arbitrary unknown phase steps for diffraction objects.
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DOI：
10.1364/ol.29.000183
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发表时间：
2004-01
期刊：
影响因子：
3.6
通讯作者：
L. Cai;Qi Liu;Xiulun Yang
中科院分区：
文献类型：
--
作者：
L. Cai;Qi Liu;Xiulun Yang
本文提出了一种从物体衍射场记录的干涉图中提取相移干涉术中任意未知和不等相位阶跃，然后用我们导出的公式数字重建物体波前的一般方法。首先根据衍射场的统计性质计算相位阶跃，并通过迭代方法进一步改进。该方法简单，精度高，适用于任意帧数N（N ≥ 3）以及平滑和漫射物体，一系列计算机模拟验证了这一点。
A general method of extracting the arbitrary unknown and unequal phase steps in phase-shift interferometry from interferograms recorded on the diffraction field of an object and then reconstructing the object wave front digitally with our derived formulas is proposed. The phase steps are first calculated based on the statistical nature of the diffraction field and are further improved by an iterative approach. This method is simple, highly accurate, and usable for any frame number N (N > or = 3) and for both smooth and diffusing objects, as is verified by a series of computer simulations.