Xu-Yao SONG, Qing-Duo DUANMU, Wei DONG, Zun-Dong YUAN, Zhi-Bin LI, Xiao-Feng LU, Yan QU. Nonlinearity measurements of spectral responsivity of Fourier transform infrared spectrometer measurement system based on flux superposition principle [J]. Journal of Infrared and Millimeter Waves, 2020, 39(4): 409
- Journal of Infrared and Millimeter Waves
- Vol. 39, Issue 4, 409 (2020)
Fig. 1. Schematic of the nonlinearity measurement and the radiation flux superposition apertures
Fig. 2. Drift characteristic of the blackbody radiation source measured by LP4
Fig. 3. Drift characteristic of the blackbody radiation source measured by FTIR (a) relative drifts of spectrums measured by DTGS detector，(b) relative drifts of spectrums measured by MCT detector
Fig. 4. Nonlinearity measurement results and uncertainties at wavelengths of 3.9 μm and 10.6 μm (a) measurement results and uncertainties measured by DTGS detecto, (b) measurement results and uncertainties measured by MCT detector
Fig. 5. Repeatability of nonlinearity measurement results at the wavelength of 3.9 μm measured by DTGS detector
Fig. 6. Integral nonlinearity measurement results, comparisons and uncertainties
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Table 1. 辐射通量倍增光阑尺寸测量结果
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Table 2. 不确定来源及评价
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