Nan ZHAO, Yang LIU, Ningyang ZHAO, Longge MA, Meicong LI, Jingjing JIAO, Chenfei DING. Establishment and Optimization of Photoacoustic Cell Model in Photoacoustic Spectrum Detection System[J]. Acta Photonica Sinica, 2021, 50(7): 238
- Acta Photonica Sinica
- Vol. 50, Issue 7, 238 (2021)
Fig. 1. Structure diagram of detection system
Fig. 2. Schematic diagram of photoacoustic cell structure
Fig. 3. Grid model of photoacoustic cell
Fig. 4. Rough scanning simulation results of three variables
Fig. 5. Detailed scanning simulation results of three variables
Fig. 6. Acoustic pressure with resonant cavity radius of 2 mm， 3 mm and 4 mm
Fig. 7. The influence caused by the change of the buffer cavity radius
Fig. 8. Rough scanning of global frequency
Fig. 9. Partial frequency refinement scan
Fig. 10. The distribution of acoustic pressure in the photoacoustic cell at 1 387.9 Hz
Fig. 11. Photoacoustic cell with rounded corners
Fig. 12. Acoustic pressure comparison of right-angle and round-angle photoacoustic cell
Fig. 13. Acoustic pressure distribution of a photoacoustic cell with rounded corners
Fig. 14. Frequency response diagram
Fig. 15. Noise distribution diagram
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Table 1. Physical constants of nitrogen
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Table 2. Performance data of right-angle photoacoustic cell
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Table 3. Performance data of round corner photoacoustic cell
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Table 4. Comparison of experiment and calculated results
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