Quartz-enhanced photoacoustic-photothermal spectroscopy for trace gas sensing

被引：77
|
作者：
Hu, Yinqiu [1 ]
Qiao, Shunda [1 ]
He, Ying [1 ]
Lang, Ziting [1 ]
Ma, Yufei [1 ]
机构：
[1] Harbin Inst Technol, Natl Key Lab Sci & Technol Tunable Laser, Harbin 150001, Peoples R China
来源：
OPTICS EXPRESS | 2021年 / 29卷 / 04期
基金：
中国国家自然科学基金;
关键词：
TUNING-FORK; QEPAS SENSOR; LASER; CO;
D O I：
10.1364/OE.418256
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A trace gas detection technique of quartz-enhanced photoacoustic-photothermal spectroscopy (QEPA-PTS) is demonstrated. Different from quartz-enhanced photoacoustic spectroscopy (QEPAS) or quartz-enhanced photothermal spectroscopy (QEPTS), which detected only one single kind of signal, QEPA-PTS was realized by adding the photoacoustic and photothermal signals generated from two quartz tuning forks (QTFs), respectively. Water vapor (H2O) with a volume concentration of 1.01% was selected as the analyte gas to investigate the QEPA-PTS sensor performance. Compared to QEPAS and QEPTS, an enhanced signal level was achieved for this QEPA-PTS system. Further improvement of such a technique was proposed. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：5121 / 5127
页数：7
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