A mini-resonant photoacoustic sensor based on a sphere-cylinder coupled acoustic resonator for high-sensitivity trace gas sensing

Wu, Guojie; Zhang, Yongjia; Gong, Zhenfeng; Fan, Yeming; Xing, Jiawei; Wu, Xue; Ma, Junsheng; Peng, Wei; Yu, Qingxu; Mei, Liang

doi:10.1016/j.pacs.2024.100595

Photoacoustics

2024

DOI: 10.1016/j.pacs.2024.100595

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A mini-resonant photoacoustic sensor based on a sphere-cylinder coupled acoustic resonator for high-sensitivity trace gas sensing

Guojie Wu,

Yongjia Zhang,

Zhenfeng Gong

et al.

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2024

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Cited by 7 publications

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A dual‐resonance enhanced photoacoustic spectroscopy gas sensor based on a fiber optic cantilever beam microphone and a spherical photoacoustic cell

Zhu,

Guan,

Jiang

et al. 2024

Micro & Optical Tech Letters

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We propose a novel high‐performance dual‐resonance enhanced photoacoustic spectroscopy (DRE‐PAS) gas sensor based on a highly sensitive fiber optic cantilever beam microphone and a high‐Q spherical photoacoustic cell (PAC). The first‐order resonant frequency (FORF) of the spherical PAC is analyzed by finite element analysis to match the FORF of the cantilever microphone for the double resonance enhancement of the photoacoustic signal. The photoacoustic spectroscopy (PAS) system, including the DRE‐PAS sensor, a 1532.8 nm distributed feedback laser, and a high‐speed spectrometer, has been successfully exploited for trace acetylene (C2H2) detection. The experimental results show that the limit of detection (LOD) is 106.8 parts‐per‐billion (ppb) with an integral time of 1 s, and the LOD can be further reduced to 11.03 ppb by Allan‐Werle deviation for 100 s integral time. The normalized noise equivalent absorption coefficient can be obtained as 2.44 × 10−8 cm−1 WHz−1/2. The reported DRE‐PAS gas sensor has the superior characteristics of photoacoustic signal enhancement, high sensitivity, and strong antielectromagnetic interference capability, which can provide a new solution for PAS development.

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A dual‐resonance enhanced photoacoustic spectroscopy gas sensor based on a fiber optic cantilever beam microphone and a spherical photoacoustic cell

Zhu,

Guan,

Jiang

et al. 2024

Micro & Optical Tech Letters

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show abstract

Simultaneous dual-gas measurement using hybrid photoacoustic spectroscopy

Huang,

Zhang,

Wang

et al. 2024

Microchemical Journal

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Simultaneous measurement of methane, propane and isobutane using a compact mid-infrared photoacoustic spectrophone

Mei,

Wang,

et al. 2024

Photoacoustics

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A mini-resonant photoacoustic sensor based on a sphere-cylinder coupled acoustic resonator for high-sensitivity trace gas sensing

Cited by 7 publications

References 55 publications

A dual‐resonance enhanced photoacoustic spectroscopy gas sensor based on a fiber optic cantilever beam microphone and a spherical photoacoustic cell

A dual‐resonance enhanced photoacoustic spectroscopy gas sensor based on a fiber optic cantilever beam microphone and a spherical photoacoustic cell

Simultaneous dual-gas measurement using hybrid photoacoustic spectroscopy

Simultaneous measurement of methane, propane and isobutane using a compact mid-infrared photoacoustic spectrophone

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