Interferogram analysis using an accurate fully automatic algorithm.
Interferogram analysis using an accurate fully automatic algorithm.
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DOI：
10.1364/ao.24.003101
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发表时间：
1985-09
期刊：
影响因子：
1.9
通讯作者：
Keith A. Nugent
中科院分区：
文献类型：
--
作者：
Keith A. Nugent
回顾了Takeda等人提出的基于傅里叶变换的干涉图分析技术，指出干涉图的数字化会使恢复的相位物体严重失真。提出了一种处理该问题的算法。如果记录介质的响应是非线性的，则恢复的相位对象也可能严重失真。提出了一种仅利用干涉图中的数据对薄膜响应进行标定的算法，该算法可用于校正薄膜非线性的影响。该技术被证明在实验中获得的激光产生的等离子体的研究干涉图。
The Fourier transform based interferogram analysis technique of Takeda et al. is reviewed, and it is shown that the digitization of the interferogram can act to seriously distort the recovered phase object. An algorithm for dealing with this problem is proposed. The recovered phase object may also be seriously distorted if the response of the recording medium is nonlinear. An algorithm for calibrating the film response is proposed which uses only the data in the interferogram and which can be used to correct the effects of the film nonlinearity. The technique is demonstrated on an experimental inteferogram obtained in a study of laser-produced plasmas.