12 October 2010 Measurement of a turbid medium's refractive index with optical coherence tomography
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A method of measuring a turbid medium's refractive index using optical coherence tomography (OCT) images is presented. All of the necessary information for obtaining a sample's refractive index will be obtained through two OCT images with and without the sample. The process of the measurement is simple and easy. The time of data gathering is faster. Therefore, this method could provide a good way for measuring the refractive index of turbid media and materials whose characters are easy to change. The refractive index of a sample, which has upper surface with arbitrary shape, could be measured using the method. The data for measuring the sample's refractive index anywhere in 2-3 mm deeper in the sample could be obtained at the same time. The method makes up the disadvantage of long time consuming and a complex process in the focus tracking method. And it would make the optical path matching method developed further more. The refractive indexes of some samples have been measured using this method and its validity has been proofed.
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Yinqi Feng, Yinqi Feng, Yaoqin Liu, Yaoqin Liu, "Measurement of a turbid medium's refractive index with optical coherence tomography", Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 76565S (12 October 2010); doi: 10.1117/12.866126; https://doi.org/10.1117/12.866126

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