Acoustic microresonator based in-plane quartz-enhanced photoacoustic spectroscopy sensor with a line interaction mode
Acoustic microresonator based in-plane quartz-enhanced photoacoustic spectroscopy sensor with a line interaction mode
复制标题
基于声微谐振器的线交互模式面内石英增强光声光谱传感器
DOI：
10.1364/ol.452085
复制
发表时间：
2022-03-15
期刊：
影响因子：
3.6
通讯作者：
Ma, Yufei
中科院分区：
文献类型：
--
作者：
Lang, Ziting;Qiao, Shunda;Ma, Yufei
首次提出了一种基于声微谐振器（AmR）的平面内石英增强光声光谱（IP-QEPAS）传感器。具有开槽侧壁的拟议AmR的声波的相互作用区域不限于石英音叉（QTF）尖头的一点，而是沿着QTF尖头的整个平面延伸。设计了16种amr来确定最佳参数。选择水蒸气（H2O）作为分析物来验证所报告的方法。结果表明，采用线交互模式的IP-QEPAS的AmR不仅提供了高信号电平，而且降低了激光直接照射QTF引起的热噪声。与无AmR的标准IP-QEPAS相比，该技术的最低检测限（MDL）提高了4.11倍。(C) 2022光学出版集团
An acoustic microresonator (AmR) based in-plane quartz-enhanced photoacoustic spectroscopy (IP-QEPAS) sensor with a line interaction mode is proposed for what is believed to be the first time. The interaction area for the acoustic wave of the proposed AmR, with a slotted sidewall, is not limited to a point of the quartz tuning fork (QTF) prongs, but extends along the whole plane of the QTF prongs. Sixteen types of AmRs are designed to identify the best parameters. Water vapor (H2O) is chosen as the analyte to verify the reported method. The results indicate that this AmR for IP-QEPAS with a line interaction mode not only provides a high signal level, but also reduces the thermal noise caused by the laser directly illuminating the QTF. Compared with standard IP-QEPAS without an AmR, the minimum detection limit (MDL) is improved by 4.11 times with the use of the technique proposed in this study. (C) 2022 Optica Publishing Group