Fig. 1. 圆柱形光声池结构组成Structure composition of cylindrical photoacoustic cell

Fig. 2. 光声光谱气体检测实验系统示意图Schematic diagram of photoacoustic spectrum gas detection experimental system

Fig. 3. 光声池声学有限元模型与仿真结果Acoustic finite element model and simulation results of photoacoustic cell

Fig. 4. 进、出口孔几何参数影响Influence of geometric parameters of inlet and outlet

Fig. 5. 谐振腔几何参数影响Influence of geometric parameters of resonator

Fig. 6. 缓冲腔长度影响Effect of buffer length

Fig. 7. 缓冲腔半径影响Effect of buffer radius

Fig. 8. 温度因素影响Effect of temperature

Fig. 9. 相对湿度因素影响Effect of humidity