Single off-beam exciting dual-quartz-tuning-fork resonance-enhanced QEPAS trace gas sensing

Bangyu Liu; Shunda Qiao; Ying He; Yufei Ma

doi:10.3788/COL202523.103001

Single off-beam exciting dual-quartz-tuning-fork resonance-enhanced QEPAS trace gas sensing

Bangyu Liu
, Shunda Qiao^*
, Ying He
, Yufei Ma^*

^*Corresponding author for this work

School of Astronautics

Harbin Institute of Technology

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

Abstract

In this Letter, a quartz-enhanced photoacoustic spectroscopy (QEPAS) gas sensor based on a single off-beam acoustic micro-resonator (AmR) and dual quartz tuning forks (QTFs) was demonstrated for the first time, to our knowledge. The sensor offers advantages of a compact sensing structure and high acoustic energy utilization efficiency. The key parameters of the designed off-beam AmR were optimized based on standing wave enhancement characteristics. Water vapor (H₂O) in the environment was chosen as the target gas to investigate the sensor performance. Under identical experimental conditions, the reported sensor achieved 15.02 times improvement in detection sensitivity compared to the bare QTF-based sensor system, as well as a 1.53 times enhancement over the traditional off-beam QEPAS technique.

Original language	English
Article number	103001
Journal	Chinese Optics Letters
Volume	23
Issue number	10
DOIs	https://doi.org/10.3788/COL202523.103001
State	Published - 10 Oct 2025

Keywords

acoustic micro-resonator
dual quartz tuning fork
quartz-enhanced photoacoustic spectroscopy

Access to Document

10.3788/COL202523.103001

Cite this

@article{66e86370950e4482a760f4a7e7a1ab12,

title = "Single off-beam exciting dual-quartz-tuning-fork resonance-enhanced QEPAS trace gas sensing",

abstract = "In this Letter, a quartz-enhanced photoacoustic spectroscopy (QEPAS) gas sensor based on a single off-beam acoustic micro-resonator (AmR) and dual quartz tuning forks (QTFs) was demonstrated for the first time, to our knowledge. The sensor offers advantages of a compact sensing structure and high acoustic energy utilization efficiency. The key parameters of the designed off-beam AmR were optimized based on standing wave enhancement characteristics. Water vapor (H2O) in the environment was chosen as the target gas to investigate the sensor performance. Under identical experimental conditions, the reported sensor achieved 15.02 times improvement in detection sensitivity compared to the bare QTF-based sensor system, as well as a 1.53 times enhancement over the traditional off-beam QEPAS technique.",

keywords = "acoustic micro-resonator, dual quartz tuning fork, quartz-enhanced photoacoustic spectroscopy",

author = "Bangyu Liu and Shunda Qiao and Ying He and Yufei Ma",

note = "Publisher Copyright: {\textcopyright} 2025 Chinese Optics Letters.",

year = "2025",

month = oct,

day = "10",

doi = "10.3788/COL202523.103001",

language = "英语",

volume = "23",

journal = "Chinese Optics Letters",

issn = "1671-7694",

publisher = "Optica Publishing Group (formerly OSA)",

number = "10",

}

TY - JOUR

T1 - Single off-beam exciting dual-quartz-tuning-fork resonance-enhanced QEPAS trace gas sensing

AU - Liu, Bangyu

AU - Qiao, Shunda

AU - He, Ying

AU - Ma, Yufei

PY - 2025/10/10

Y1 - 2025/10/10

N2 - In this Letter, a quartz-enhanced photoacoustic spectroscopy (QEPAS) gas sensor based on a single off-beam acoustic micro-resonator (AmR) and dual quartz tuning forks (QTFs) was demonstrated for the first time, to our knowledge. The sensor offers advantages of a compact sensing structure and high acoustic energy utilization efficiency. The key parameters of the designed off-beam AmR were optimized based on standing wave enhancement characteristics. Water vapor (H2O) in the environment was chosen as the target gas to investigate the sensor performance. Under identical experimental conditions, the reported sensor achieved 15.02 times improvement in detection sensitivity compared to the bare QTF-based sensor system, as well as a 1.53 times enhancement over the traditional off-beam QEPAS technique.

AB - In this Letter, a quartz-enhanced photoacoustic spectroscopy (QEPAS) gas sensor based on a single off-beam acoustic micro-resonator (AmR) and dual quartz tuning forks (QTFs) was demonstrated for the first time, to our knowledge. The sensor offers advantages of a compact sensing structure and high acoustic energy utilization efficiency. The key parameters of the designed off-beam AmR were optimized based on standing wave enhancement characteristics. Water vapor (H2O) in the environment was chosen as the target gas to investigate the sensor performance. Under identical experimental conditions, the reported sensor achieved 15.02 times improvement in detection sensitivity compared to the bare QTF-based sensor system, as well as a 1.53 times enhancement over the traditional off-beam QEPAS technique.

KW - acoustic micro-resonator

KW - dual quartz tuning fork

KW - quartz-enhanced photoacoustic spectroscopy

UR - https://www.scopus.com/pages/publications/105017075516

U2 - 10.3788/COL202523.103001

DO - 10.3788/COL202523.103001

M3 - 文章

AN - SCOPUS:105017075516

SN - 1671-7694

VL - 23

JO - Chinese Optics Letters

JF - Chinese Optics Letters

IS - 10

M1 - 103001

ER -

Single off-beam exciting dual-quartz-tuning-fork resonance-enhanced QEPAS trace gas sensing

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this