A Toolbox for Isophase-Curvature Guided Computation of Metrology Hologram.

IF 1.3 4区 工程技术 Q3 INSTRUMENTS & INSTRUMENTATION
Ulf Griesmann, Johannes A Soons, Gufran S Khan
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引用次数: 0
计量全息图等相曲率导向计算工具箱
我们描述了一个开源数值工具箱的算法基础,用Octave语言[1]编写,用于创建计算机生成的二进制和多级全息图,用于复杂非球面和自由曲面精密曲面和波前的干涉形式误差测量。在这类表面的典型测量设置中,使用全息图生成具有表面设计形状的测试波前,然后使用成像激光干涉仪将其与制造部件进行比较。测量中全息图的光学函数通常用光学光线跟踪软件建模,并可由标量光学相位函数φ: R2→r封装。工具箱将相位函数转换为等效的二进制全息图,生成干涉形状误差测量所需的测试波前。该工具箱中的算法利用了相函数的局部性质与等相线的局部几何(曲率)之间的关系。它构成了计算光学全息图的有效算法的核心。全息图以一种可以被大多数激光电子束光刻系统处理的格式创建。虽然工具箱主要用于创建测量精密表面和波前所需的全息图布局,但我们表明,等相跟踪算法很容易扩展到具有奇点和不连续的相函数。这样的相位函数可以产生带分岔的全息图,并且可以用来产生螺旋波前。具有螺旋波前的光束在表面和波前测量之外有应用。该工具箱还包括一组用于有效估计和评估泽尼克多项式的函数,这些函数在光学应用中广泛使用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
自引率
33.30%
发文量
10
审稿时长
>12 weeks
期刊介绍: The Journal of Research of the National Institute of Standards and Technology is the flagship publication of the National Institute of Standards and Technology. It has been published under various titles and forms since 1904, with its roots as Scientific Papers issued as the Bulletin of the Bureau of Standards. In 1928, the Scientific Papers were combined with Technologic Papers, which reported results of investigations of material and methods of testing. This new publication was titled the Bureau of Standards Journal of Research. The Journal of Research of NIST reports NIST research and development in metrology and related fields of physical science, engineering, applied mathematics, statistics, biotechnology, information technology.
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