Lateral shearing common-path digital holographic microscopy based on a slightly trapezoid Sagnac interferometer.
Lateral shearing common-path digital holographic microscopy based on a slightly trapezoid Sagnac interferometer.
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DOI：
10.1364/oe.25.013659
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发表时间：
2017-06
期刊：
影响因子：
3.8
通讯作者：
Chaojie Ma;Ying Li;Jiwei Zhang;Peng Li;Teli Xi;Jianglei Di;Jianlin Zhao
中科院分区：
文献类型：
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作者：
Chaojie Ma;Ying Li;Jiwei Zhang;Peng Li;Teli Xi;Jianglei Di;Jianlin Zhao
我们提出了一种紧凑和易于对齐的横向剪切共光路数字全息显微镜，它是基于一个略梯形Sagnac干涉仪创建两个横向剪切光束，形成离轴几何。在这种干涉仪中，两束光以相反的方向通过一组相同的光学元件，并且具有几乎相同的光程差。没有任何振动隔离，时间稳定性的设置被发现是约0.011拉德。与高度简单的横向剪切干涉仪相比，该装置的离轴角易于调节和定量控制，同时图像质量不受影响。通过对静态和动态试件的测量实验，验证了该方法的可行性和实用性。
We propose a compact and easy-to-align lateral shearing common-path digital holographic microscopy, which is based on a slightly trapezoid Sagnac interferometer to create two laterally sheared beams and form off-axis geometry. In this interferometer, the two beams pass through a set of identical optical elements in opposite directions and have nearly the same optical path difference. Without any vibration isolation, the temporal stability of the setup is found to be around 0.011 rad. Compared with highly simple lateral shearing interferometer, the off-axis angle of the setup can be easily adjusted and quantitatively controlled, meanwhile the image quality is not degraded. The experiments for measuring the static and dynamic specimens are performed to demonstrate the capability and applicability.