Open AccessQuartz-enhanced photoacoustic-photothermal spectroscopy for trace gas sensing
Author(s) -
Yinqiu Hu,
Shunda Qiao,
Yaning He,
Ziting Lang,
Yufei Ma
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.418256
Subject(s) - photothermal therapy , photoacoustic spectroscopy , photothermal spectroscopy , quartz , trace gas , materials science , photoacoustic imaging in biomedicine , spectroscopy , analyte , signal (programming language) , optics , volume (thermodynamics) , photoacoustic effect , analytical chemistry (journal) , chemistry , nanotechnology , chromatography , physics , organic chemistry , quantum mechanics , computer science , composite material , programming language
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 (H 2 O) 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.