TY - JOUR
T1 - All-optical non-resonant photoacoustic spectroscopy for multicomponent gas detection based on aseismic photoacoustic cell
AU - Fu, Lujun
AU - Lu, Ping
AU - Pan, Yufeng
AU - Zhong, Yi
AU - Sima, Chaotan
AU - Wu, Qiang
AU - Zhang, Jiangshan
AU - Cui, Lingzhi
AU - Liu, Deming
N1 - Funding information: This work was supported by NSFC (No. 62275096, No. 62375094); Science Fund for Creative Research Groups of the Nature Science Foundation of Hubei (No. 2021CFA033); NSFC-RS Exchange Programme (No. 62111530153); the Royal Society International Exchanges 2020 Cost Share (NSFC) of United Kingdom (No. IEC\NSFC\201015); Interdiciplinary Research Program (HUST:2023JCYJ046).
PY - 2023/12/1
Y1 - 2023/12/1
N2 - An all-optical non-resonant photoacoustic spectroscopy system for multicomponent gas detection based on a silicon cantilever optical microphone (SCOM) and an aseismic photoacoustic cell is proposed and demonstrated. The SCOM has a high sensitivity of over 96.25 rad/Pa with sensitivity fluctuation less than ± 1.56 dB between 5 Hz and 250 Hz. Besides, the minimal detectable pressure (MDP) of the sensor is 0.55 μPa·Hz−1/2 at 200 Hz, which indicates that the fabricated sensor has high sensitivity and low noise level. Six different gases of CO2, CO, CH4, C2H6, C2H4, C2H2 are detected at the frequency of 10 Hz, whose detection limits (3σ) are 62.66 ppb, 929.11 ppb, 1494.97 ppb, 212.94 ppb, 1153.36 ppb and 417.61 ppb, respectively. The system achieves high sensitivity and low detection limits for trace gas detection. In addition, the system exhibits seismic performance with suppressing vibration noise by 4.5 times, and achieves long-term stable operation. The proposed non-resonant all-optical PAS multi-component gas detection system exhibits the advantages of anti-vibration performance, low gas consumption and long term stability, which provides a solution for working in complex environments with inherently safe.
AB - An all-optical non-resonant photoacoustic spectroscopy system for multicomponent gas detection based on a silicon cantilever optical microphone (SCOM) and an aseismic photoacoustic cell is proposed and demonstrated. The SCOM has a high sensitivity of over 96.25 rad/Pa with sensitivity fluctuation less than ± 1.56 dB between 5 Hz and 250 Hz. Besides, the minimal detectable pressure (MDP) of the sensor is 0.55 μPa·Hz−1/2 at 200 Hz, which indicates that the fabricated sensor has high sensitivity and low noise level. Six different gases of CO2, CO, CH4, C2H6, C2H4, C2H2 are detected at the frequency of 10 Hz, whose detection limits (3σ) are 62.66 ppb, 929.11 ppb, 1494.97 ppb, 212.94 ppb, 1153.36 ppb and 417.61 ppb, respectively. The system achieves high sensitivity and low detection limits for trace gas detection. In addition, the system exhibits seismic performance with suppressing vibration noise by 4.5 times, and achieves long-term stable operation. The proposed non-resonant all-optical PAS multi-component gas detection system exhibits the advantages of anti-vibration performance, low gas consumption and long term stability, which provides a solution for working in complex environments with inherently safe.
KW - Optical microphone
KW - Photoacoustic spectroscopy
KW - Multicomponent gas detection
KW - Silicon cantilever
KW - Aseismic photoacoustic cell
UR - http://www.scopus.com/inward/record.url?scp=85176269882&partnerID=8YFLogxK
U2 - 10.1016/j.pacs.2023.100571
DO - 10.1016/j.pacs.2023.100571
M3 - Article
SN - 2213-5979
VL - 34
JO - Photoacoustics
JF - Photoacoustics
M1 - 100571
ER -