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Specific features of partially coherent holography of dynamic objects

机译:动态物体部分相干全息的特定特征

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摘要

A method for recording partially coherent holographic interferograms is proposed, which makes it possible to control by instrumental means the sensitivity to the object point displacement. In this case, a decrease in sensitivity is accompanied by a decrease in the depth of the reconstructed image, which simplifies automated inputting of the resulting interferogram into a computer for further processing. The calculations showed that the partially coherent holograms using transverse scale transformation in one of the arms of a recording interferometer with a scale factor different from - 1 possess interferometric sensitivity, whereas the partially coherent holograms with the wavefront rotation in one of the arms of a recording interferometer lack interferometric sensitivity to the displacement of object points during recording. The latter feature makes it possible to record objects whose displacement considerably exceeds the wavelength of recording radiation.
机译:提出了一种用于记录部分相干的全息干涉图的方法,该方法使得可以通过仪器手段控制对物点位移的灵敏度。在这种情况下,灵敏度的降低伴随着重构图像的深度的降低,这简化了将所得干涉图自动输入计算机进行进一步处理的过程。计算表明,在比例干涉系数不同于-1的记录干涉仪的一个臂中使用横向比例变换的部分相干全息图具有干涉灵敏度,而在记录的其中一个臂中具有波前旋转的部分相干全息图具有干涉灵敏度。干涉仪在记录过程中对目标点的位移缺乏干涉敏感性。后一个特征使得可以记录其位移大大超过记录辐射波长的物体。

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