Yun PAN, Jianbing ZHANG, Peng ZHOU, Guoqing GU. Real-time measuring system for liquid refractive index based on Fourier transform spectrum analysis[J]. Journal of Applied Optics, 2023, 44(5): 1061
- Journal of Applied Optics
- Vol. 44, Issue 5, 1061 (2023)
Fig. 1. Interferometric optical path diagram for real-time measurement of liquid refractive index
Fig. 2. Optical path diagram of split-tip equal-thickness interferometry
Fig. 3. Spectral analysis results of simulated interference fringes based on Fourier transform
Fig. 4. Assembly diagram and its physical image
Fig. 5. Flow chart of liquid refractive index measurement program
Fig. 6. Measurement results of liquid refractive indices
Fig. 7. Time stability of measurement system at different initial fringe numbers
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