Liguo Qu, Liang Xu, Jianguo Liu, Mingchun Feng, Wenqing Liu, Hanyang Xu, Ling Jin. Numerical Simulation Analysis of Portable High-Speed FTIR Rotary Interferometers[J]. Acta Optica Sinica, 2021, 41(9): 0907001
- Acta Optica Sinica
- Vol. 41, Issue 9, 0907001 (2021)
Fig. 1. Rotary scanning interferometer
Fig. 2. Reference coordinate system
Fig. 3. Optical path diagram of rotating mirror
Fig. 4. Variation curve of optical path difference during rotation period
Fig. 5. Optical path variation curve with refractive index and angle
Fig. 6. Square of optical path difference linear fitting error
Fig. 7. First derivative of optical path curves with different refractive indices
Fig. 8. Linear fitting residual
Fig. 9. Optical path difference linear fitting and residual error
Fig. 10. Optical path difference polynomial fitting and residual error
Fig. 11. Optical path difference sampling interval
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Table 1. Refractive index of ZnSe in medium infrared band
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