Qi WANG, Shi-chao WANG, Tai-yu LIU, Zi-qiang CHEN. Research Progress of Multi-Component Gas Detection by Photoacoustic Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2022, 42(1): 1
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 1, 1 (2022)
Fig. 1. The production process of photoacoustic signal
Fig. 2. The gas detection system of photoacoustic spectrum
Fig. 3. Gas detection system with incoherent light source
Fig. 4. Vehicle borne photoacoustic spectrum gas detection system
Fig. 5. Fiber laser photoacoustic spectrometer
Fig. 6. Multi-channel gas detection system with DFB laser
Fig. 7. Time division multiplexing multi-gas sensor with five QCLs
Fig. 8. Resonant cavity parallel system
Fig. 9. Structure diagram of multi-channel photoacoustic cell
Fig. 10. Gas detection system of multi-channel photoacoustic cell
Fig. 11. Schematic of fiber acoustic sensor detection unit
Fig. 12. Schematic of cantilever enhanced photoacoustic spectroscopy detector
Fig. 13. Structure diagram of fiber F-P cantilever sensing
Fig. 14. Schematic diagram of quartz enhanced photoacoustic spectroscopic microphone
(a): On-beam configurations; (b): Off-beam configurations
(a): On-beam configurations; (b): Off-beam configurations
Fig. 15. Gas detection system of quartz enhanced photoacoustic spectroscopy
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