双波长干涉测量中有效波长的研究

H. Brug, R. G. Klaver
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引用次数: 12

摘要

讨论了双波长干涉测量中有效波长的问题。提出了一种不同于普遍采用的定义,并对其有效性进行了讨论。通过采用这种新的有效波长,可以使用干涉测量技术测量长度的范围可以大大增加,而不会在增加的范围内引入相位展开歧义。给出了一个图,并由此导出了一种方法,使这种新的有效波长的有效利用成为可能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On the effective wavelength in two-wavelength interferometry
A discussion on the effective wavelength in two-wavelength interferometry is given. A definition, different from the commonly adopted one, is presented and its validity is discussed. By adopting this new effective wavelength the range over which lengths can be measured using interferometric techniques can be vastly increased, without introducing phase unwrapping ambiguities within this increased range. A graph is presented from which a method is derived, enabling an efficient use of this new effective wavelength.
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