Trace photoacoustic SO2 gas sensor in SF6 utilizing a 266 nm UV laser and an acousto-optic power stabilizer
文献类型：期刊论文
| 作者 | B. S. Chen, H. K. Li, X. M. Zhao, M. Gao, K. Cheng, X. P. Shao, H. P. Wu, L. Dong and X. K. Yin |
| 刊名 | Optics Express
 |
| 出版日期 | 2023 |
| 卷号 | 31期号:4页码:6974-6981 |
| ISSN号 | 1094-4087 |
| DOI | 10.1364/oe.483240 |
| 英文摘要 | A sulfur dioxide (SO2) gas sensor based on the photoacoustic spectroscopy technology in a sulfur hexafluoride (SF6) gas matrix was demonstrated for SF6 decomposition components monitoring in the power system. A passive Q-switching laser diode (LD) pumped all-solid-state 266 nm deep-ultraviolet laser was exploited as the laser excitation source. The photoacoustic signal amplitude is linear related to the incident optical power, whereas, a random laser power jitter is inevitable since the immature laser manufacturing technology in UV spectral region. A compact laser power stabilization system was developed for better sensor performance by adopting a photodetector, a custom-made internal closed-loop feedback controller and a Bragg acousto-optic modulator (AOM). The out-power stability of 0.04% was achieved even though the original power stability was 0.41% for similar to 2 hours. A differential two-resonator photoacoustic cell (PAC) was designed for weak photoacoustic signal detection. The special physical constants of SF6 buffer gas induced a high-Q factor of 85. A detection limit of 140 ppbv was obtained after the optimization, which corresponds to a normalized noise equivalent absorption coefficient of 3.2 x 10(-9) cm(-1)WHz(-1/2). (c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/67361]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | B. S. Chen, H. K. Li, X. M. Zhao, M. Gao, K. Cheng, X. P. Shao, H. P. Wu, L. Dong and X. K. Yin. Trace photoacoustic SO2 gas sensor in SF6 utilizing a 266 nm UV laser and an acousto-optic power stabilizer[J]. Optics Express,2023,31(4):6974-6981. |
| APA | B. S. Chen, H. K. Li, X. M. Zhao, M. Gao, K. Cheng, X. P. Shao, H. P. Wu, L. Dong and X. K. Yin.(2023).Trace photoacoustic SO2 gas sensor in SF6 utilizing a 266 nm UV laser and an acousto-optic power stabilizer.Optics Express,31(4),6974-6981. |
| MLA | B. S. Chen, H. K. Li, X. M. Zhao, M. Gao, K. Cheng, X. P. Shao, H. P. Wu, L. Dong and X. K. Yin."Trace photoacoustic SO2 gas sensor in SF6 utilizing a 266 nm UV laser and an acousto-optic power stabilizer".Optics Express 31.4(2023):6974-6981. |
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