Refractive index measurement for irregular-shaped samples

Shu-Mieh Yang; Kuo-Hao Chang; Ta-Kun Kung

doi:10.1117/12.132179

20 October 1992 Refractive index measurement for irregular-shaped samples

Shu-Mieh Yang, Kuo-Hao Chang, Ta-Kun Kung

Proceedings Volume 1720, Intl Symp on Optical Fabrication, Testing, and Surface Evaluation; (1992) https://doi.org/10.1117/12.132179
Event: International Symposium on Optical Fabrication, Testing, and Surface Evaluation, 1992, Tokyo, Japan

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.

Citation Download Citation

Shu-Mieh Yang, Kuo-Hao Chang, and Ta-Kun Kung "Refractive index measurement for irregular-shaped samples", Proc. SPIE 1720, Intl Symp on Optical Fabrication, Testing, and Surface Evaluation, (20 October 1992); https://doi.org/10.1117/12.132179

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