Guo-shui WANG, Ao GUO, Xiao-nan LIU, Lei FENG, Peng-hao CHANG, Li-ming ZHANG, Long LIU, Xiao-tao YANG. Simulation and Influencing Factors Analysis of Gas Detection System Based on TDLAS Technology[J]. Spectroscopy and Spectral Analysis, 2021, 41(10): 3262
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 10, 3262 (2021)
Fig. 1. Wave number variation of modulated laser
Fig. 2. The light intensity after being absorbed by the air chamber
Fig. 3. The X and Y filtering components of the second harmonic
Fig. 3. The X and Y filtering components of the first harmonic
Fig. 4. S 2f/ 1f signal
Fig. 5. Concentration-signal peak fitting curve
Fig. 6. Second harmonic at different pressures
Fig. 7. Second harmonic at different temperatures
Fig. 8. Second harmonic at different modulation factors
Fig. 9. Fitting curve of modulation factors and second harmonic peak
Fig. 10. Second harmonic at different modulation frequencies
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Table 1. The date of line strength
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Table 2. Signal peaks corresponding to different concentrations (volume fraction)
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Table 3. Measurement of gas concentration (volume fraction) and its error
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Table 4. Measurement of gas concentration (volume fraction) and its error
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