Quartz-enhanced photoacoustic-photothermal spectroscopy for trace gas sensing | Zendy

Yinqiu Hu | Zendy; Shunda Qiao | Zendy; Ying He | Zendy; Ziting Lang | Zendy; Yufei Ma | Zendy

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Quartz-enhanced photoacoustic-photothermal spectroscopy for trace gas sensing

Author(s) -

Yinqiu Hu,

Shunda Qiao,

Ying 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 , materials science , trace gas , spectroscopy , photoacoustic imaging in biomedicine , optics , analyte , signal (programming language) , 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.

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