Dual-frequency modulated heterodyne quartz-enhanced photoacoustic spectroscopy

Ziting Lang; Shunda Qiao; Tiantian Liang; Ying He; Lei Qi; Yufei Ma

doi:10.1364/OE.506861

Dual-frequency modulated heterodyne quartz-enhanced photoacoustic spectroscopy

Ziting Lang
, Shunda Qiao
, Tiantian Liang
, Ying He
, Lei Qi
, Yufei Ma^*

^*Corresponding author for this work

School of Astronautics

Harbin Institute of Technology
China Aerospace Science and Technology Corporation

Research output: Contribution to journal › Article › peer-review

57 Scopus citations

Abstract

A novel dual-frequency modulated heterodyne quartz-enhanced photoacoustic spectroscopy (DFH-QEPAS) was demonstrated for what we believe to be the first time in this study. In traditional H-QEPAS, the frequency of modulated sinusoidal wave has a frequency difference (Δf ) with the resonance frequency (f 0) of a quartz tuning fork (QTF). Owing to the resonance characteristic of QTF, it cannot excite QTF to the strongest response. To achieve a stronger response, a sinusoidal wave with a frequency of f 0 was added to the modulation wave to compose a dual-frequency modulation. Acetylene (C2H2) was chosen as the target gas to verify the sensor performance. The proposed DFH-QEPAS improved 4.05 times of signal-to-noise ratio (SNR) compared with the traditional H-QEPAS in the same environmental conditions.

Original language	English
Pages (from-to)	379-386
Number of pages	8
Journal	Optics Express
Volume	32
Issue number	1
DOIs	https://doi.org/10.1364/OE.506861
State	Published - 10 Jan 2024

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title = "Dual-frequency modulated heterodyne quartz-enhanced photoacoustic spectroscopy",

abstract = "A novel dual-frequency modulated heterodyne quartz-enhanced photoacoustic spectroscopy (DFH-QEPAS) was demonstrated for what we believe to be the first time in this study. In traditional H-QEPAS, the frequency of modulated sinusoidal wave has a frequency difference (Δf ) with the resonance frequency (f 0) of a quartz tuning fork (QTF). Owing to the resonance characteristic of QTF, it cannot excite QTF to the strongest response. To achieve a stronger response, a sinusoidal wave with a frequency of f 0 was added to the modulation wave to compose a dual-frequency modulation. Acetylene (C2H2) was chosen as the target gas to verify the sensor performance. The proposed DFH-QEPAS improved 4.05 times of signal-to-noise ratio (SNR) compared with the traditional H-QEPAS in the same environmental conditions.",

author = "Ziting Lang and Shunda Qiao and Tiantian Liang and Ying He and Lei Qi and Yufei Ma",

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doi = "10.1364/OE.506861",

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T1 - Dual-frequency modulated heterodyne quartz-enhanced photoacoustic spectroscopy

AU - Lang, Ziting

AU - Qiao, Shunda

AU - Liang, Tiantian

AU - He, Ying

AU - Qi, Lei

AU - Ma, Yufei

PY - 2024/1/10

Y1 - 2024/1/10

N2 - A novel dual-frequency modulated heterodyne quartz-enhanced photoacoustic spectroscopy (DFH-QEPAS) was demonstrated for what we believe to be the first time in this study. In traditional H-QEPAS, the frequency of modulated sinusoidal wave has a frequency difference (Δf ) with the resonance frequency (f 0) of a quartz tuning fork (QTF). Owing to the resonance characteristic of QTF, it cannot excite QTF to the strongest response. To achieve a stronger response, a sinusoidal wave with a frequency of f 0 was added to the modulation wave to compose a dual-frequency modulation. Acetylene (C2H2) was chosen as the target gas to verify the sensor performance. The proposed DFH-QEPAS improved 4.05 times of signal-to-noise ratio (SNR) compared with the traditional H-QEPAS in the same environmental conditions.

AB - A novel dual-frequency modulated heterodyne quartz-enhanced photoacoustic spectroscopy (DFH-QEPAS) was demonstrated for what we believe to be the first time in this study. In traditional H-QEPAS, the frequency of modulated sinusoidal wave has a frequency difference (Δf ) with the resonance frequency (f 0) of a quartz tuning fork (QTF). Owing to the resonance characteristic of QTF, it cannot excite QTF to the strongest response. To achieve a stronger response, a sinusoidal wave with a frequency of f 0 was added to the modulation wave to compose a dual-frequency modulation. Acetylene (C2H2) was chosen as the target gas to verify the sensor performance. The proposed DFH-QEPAS improved 4.05 times of signal-to-noise ratio (SNR) compared with the traditional H-QEPAS in the same environmental conditions.

UR - https://www.scopus.com/pages/publications/85181129114

U2 - 10.1364/OE.506861

DO - 10.1364/OE.506861

M3 - 文章

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AN - SCOPUS:85181129114

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VL - 32

SP - 379

EP - 386

JO - Optics Express

JF - Optics Express

IS - 1

ER -

Dual-frequency modulated heterodyne quartz-enhanced photoacoustic spectroscopy

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