Di WANG, Yushaung LI, Yu PU, Yan LYU, Jinjian GENG, Dong LI. Study on temperature influence correction of gas concentration laser spectrum detection[J]. Journal of Applied Optics, 2020, 41(2): 348
- Journal of Applied Optics
- Vol. 41, Issue 2, 348 (2020)
Fig. 1. Principle of direct absorption spectroscopy measurement
Fig. 2. Schematic diagram of experimental device
Fig. 3. Influence of temperature on ammonia absorbance simulated by HITEMP-TDLAS at different concentrations
Fig. 4. Mechanism of temperature effect on line strength
Fig. 5. Influence of temperature on ammonia absorbance simulated by HITEMP-TDLAS at different concentrations
Fig. 6. Influence of temperature on ammonia absorbance simulated by HITEMP-TDLAS at different concentrations
Fig. 7. Comparison of results before and after correction
Fig. 8. Ammonia spectral absorbance in the range of 25 ℃ to 1 005 ℃
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