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Proceedings Paper

Refractive index measurement for irregular-shaped samples
Author(s): Shu-Mieh Yang; Kuo-Hao Chang; Ta-Kun Kung
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Paper Abstract

An immersion method that combines conventional minimum deviation technique and Fizeau interferometry for measuring the refractive index of irregular-shaped samples is described in this paper. The refractive indices of both sample and liquid can be measured and matched at the same time, thus minimizing the perturbation effected from the environment. A hollow prism is specially designed and constructed for these experiments. The results show that for precision this method reaches at least 10-4 for the refractive index and is primarily limited by the accuracy of fringe counting.

Paper Details

Date Published: 20 October 1992
PDF: 7 pages
Proc. SPIE 1720, Intl Symp on Optical Fabrication, Testing, and Surface Evaluation, (20 October 1992); doi: 10.1117/12.132179
Show Author Affiliations
Shu-Mieh Yang, Industrial Technology Research Institute (Taiwan)
Kuo-Hao Chang, Industrial Technology Research Institute (Taiwan)
Ta-Kun Kung, Industrial Technology Research Institute (Taiwan)


Published in SPIE Proceedings Vol. 1720:
Intl Symp on Optical Fabrication, Testing, and Surface Evaluation

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