光声光谱学
谐振器
材料科学
光学
光谱学
灵敏度(控制系统)
音叉
激光器
光声效应
光电子学
石英
生物医学中的光声成像
作者
Yufei Ma,Yinghao Hong,Shunda Qiao,Ziting Lang,Xiaonan Liu
出处
期刊:Optics Letters
[The Optical Society]
日期:2022-02-01
卷期号:47 (3): 601-604
摘要
An H-shaped acoustic micro-resonator (AmR)-based quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor is demonstrated for the first time. The H-shaped AmR has the advantages of easy optical alignment, high utilization of laser energy, and reduction in optical noise. The parameter of the H-shaped AmR is designed based on the standing wave enhancement characteristic. The performance of the H-shaped AmR-based QEPAS sensor system and bare quartz tuning fork (QTF)-based sensor system are measured under the same conditions by choosing water vapor (H2O) as the target gas. Compared with the QEAPS sensor based on a bare QTF, the detection sensitivity of the optimal H-shaped AmR-based QEPAS sensor exhibits a 17.2 times enhancement.
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