基于平面激光的量子级联光声光谱痕量气体传感器。

Planar Laser-Based QEPAS Trace Gas Sensor.

作者信息

Ma Yufei, He Ying, Chen Cheng, Yu Xin, Zhang Jingbo, Peng Jiangbo, Sun Rui, Tittel Frank K

机构信息

National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150001, China.

Post-doctoral Mobile Station of Power Engineering and Engineering Thermophysics, Harbin Institute of Technology, Harbin 150001, China.

出版信息

Sensors (Basel). 2016 Jun 28;16(7):989. doi: 10.3390/s16070989.

DOI:10.3390/s16070989

PMID:27367686

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4970040/

Abstract

A novel quartz enhanced photoacoustic spectroscopy (QEPAS) trace gas detection scheme is reported in this paper. A cylindrical lens was employed for near-infrared laser focusing. The laser beam was shaped as a planar line laser between the gap of the quartz tuning fork (QTF) prongs. Compared with a spherical lens-based QEPAS sensor, the cylindrical lens-based QEPAS sensor has the advantages of easier laser beam alignment and a reduction of stringent stability requirements. Therefore, the reported approach is useful in long-term and continuous sensor operation.

摘要

本文报道了一种新型的石英增强光声光谱（QEPAS）痕量气体检测方案。采用柱面透镜对近红外激光进行聚焦。激光束在石英音叉（QTF）叉指间隙之间被整形为平面线激光。与基于球面透镜的QEPAS传感器相比，基于柱面透镜的QEPAS传感器具有激光束对准更容易以及对稳定性要求降低的优点。因此，所报道的方法对于传感器的长期连续运行很有用。