Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
Jiangang Wang, Qing Xiao, Shaoqun Zeng. Dispersion measurements of water with spectral interferometry[J]. Chinese Optics Letters, 2009, 7(6): 06486
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The spectral relative phase is directly derived from the spectrally resolved interferogram by the Fourier transform method. Furthermore, the spectral absolute phase can also be found. The spectral absolute phase is used to measure the refractive index. In addition, the group index and the derivatives of the refractive index with respect to the wavelength are given through the polynomial fitting process. The measured results are compared with the published data and the new measurement results of the water are given for the wavelength larger than 1.3 \mum.