자기장 내에서 액체의 굴절률 변화 측정

초록

We present a measurement system of liquids refractive index based on a common-path spectral domain optical coherence tomography(OCT). The reflected spectrum is measured in air and liquids. In air measurement, the IFFT signal of measured spectrum gives only one peak near the mirror by the air gap. On the other hand, in liquid measurement, the mirror peak is shifted to the longer distance by the liquid refractive index. Therefore, we can calculate the refractive index of liquid using the shifted peak distance. We measure the refractive index of some liquids. The refractive index of distilled water and ethanol is 1.3468 and 1.3635 in 1550 nm