Ganshang Si, Jiaxiang Liu, Zhengang Li, Zhiqiang Ning, Yonghua Fang. Fluorescence Background Subtraction Algorithm of UV Raman Based on Morphology and Polynomial Fitting[J]. Acta Optica Sinica, 2022, 42(22): 2230001
- Acta Optica Sinica
- Vol. 42, Issue 22, 2230001 (2022)
Fig. 1. Raman and fluorescence spectral ranges (excitation light wavelength is 266 nm)
Fig. 2. Baseline correction. (a) Morphological algorithm; (b) polynomial fitting algorithm
Fig. 3. Baseline correction based on morphology and polynomial joint
Fig. 4. Comparison of correction effects for different baselines using different methods. (a) Sine function; (b) Gaussian function;(c) Sigmoid function; (d) logarithmic function
Fig. 5. Influence of parameter setting on baseline correction effect
Fig. 6. Sample preparation and experimental device. (a) Sample preparation; (b) UV Raman spectroscopy setup
Fig. 7. Original spectra of potassium nitrate samples on different substrates
Fig. 8. Results of baseline correction of potassium nitrate powder on different substrates obtained by Mor+poly and airPLS algorithms. (a) Paper; (b) transparent acrylic sheet; (c) blue acrylic sheet; (d) metal aluminum
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Table 1. Parameters of Gaussian function
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Table 2. Comparison of baseline correction effects of different methods
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Table 3. Comparison of Stdev after baseline correction by different methods
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