Quartz-enhanced photoacoustic sensor for ethylene detection implementing optimized custom tuning fork-based spectrophone
Quartz-enhanced photoacoustic sensor for ethylene detection implementing optimized custom tuning fork-based spectrophone
复制标题
用于乙烯检测的石英增强光声传感器实施优化的定制音叉分光器
DOI：
10.1364/oe.27.004271
复制
发表时间：
2019-02-18
期刊：
影响因子：
3.8
通讯作者：
Spagnolo, Vincenzo
中科院分区：
文献类型：
--
作者：
Giglio, Marilena;Elefante, Arianna;Spagnolo, Vincenzo
报道了两个高度敏感且易于互换的分光器基于自定义石英调谐叉的设计和实现，据报道具有矩形（S-1）或T形（S-2）prongs几何形状。这两个分光器已在QEPAS传感器中实现，用于乙烯检测，使用DFB-QCL发射为10.337 MU M，光功率为74.2 MW。在实施S-2分光器时，其性能之间的比较显示了信噪比3.4倍3.4倍。对于基于S-2的传感器，在5 ppm-100 ppm范围内证明了QEPAS信号对乙烯浓度的线性依赖性。在10 s的锁定集成时间内，计算了10 ppb的乙烯最小检测极限。 （c）2019年美国光学学会根据OSA开放访问发布协议条款
The design and realization of two highly sensitive and easily interchangeable spectrophones based on custom quartz tuning forks, with a rectangular (S-1) or T-shaped (S-2) prongs geometry, is reported. The two spectrophones have been implemented in a QEPAS sensor for ethylene detection, employing a DFB-QCL emitting at 10.337 mu m with an optical power of 74.2 mW. A comparison between their performances showed a signal-to-noise ratio 3.4 times higher when implementing the S-2 spectrophone. For the S-2-based sensor, a linear dependence of the QEPAS signal on ethylene concentration was demonstrated in the 5 ppm - 100 ppm range. For a 10 s lock-in integration time, an ethylene minimum detection limit of 10 ppb was calculated. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement