Double Resonant Cavity Enhanced Photoacoustic Gas Sensor for Acetylene Detection

IF 5.6 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Instrumentation and Measurement Pub Date : 2024-11-22 DOI:10.1109/TIM.2024.3500054

Yafei Li;Gangyun Guan;Shuo Yang;Liang Chen;Zhuobei Deng;Wanling Deng;Junkai Huang;Xicheng Wang;Xiaobin Xue;Xile Han;Chuantao Zheng;Tuan Guo;Frank K. Tittel

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Abstract

In order to achieve highly sensitive gas detection, we proposed and experimentally demonstrated a doubly resonant cavity enhanced photoacoustic (CEPA) gas sensing technology. Two high-reflection mirrors were added on both sides of the H-type photoacoustic (PA) cell to form a CEPA cell. As an example, we developed an acetylene (C2H2) gas sensor. Double resonance of optical and acoustic greatly improves the detection sensitivity, achieving a 60-time enhancement of PA signal. Compared with other sensors of the same type, the proposed sensor exhibits excellent performance with a limit of detection (LoD) of six parts-per-billion (ppb) and a normalized noise equivalent absorption (NNEA) coefficient of

$1.94\times 10^{-10}$

$^{-1}\cdot $

$\cdot $

$^{-1/2}$

. By increasing the reflectivity of mirrors and optimizing the mode matching conditions of the laser cavity, the LoD of proposed sensor can be further improved.

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用于乙炔检测的双谐振腔增强型光声气体传感器

为了实现高灵敏度的气体检测，我们提出了一种双谐振腔增强型光声（CEPA）气体传感技术，并进行了实验验证。我们在 H 型光声 (PA) 单元的两侧增加了两个高反射镜，从而形成了 CEPA 单元。例如，我们开发了一种乙炔（C2H2）气体传感器。光声双共振大大提高了检测灵敏度，使 PA 信号增强了 60 倍。与其他同类型传感器相比，所提出的传感器性能卓越，检测限（LoD）为十亿分之六（ppb），归一化噪声等效吸收（NNEA）系数为 1.94times 10^{-10}$ cm $^{-1}\cdot $ W $\cdot $ Hz $^{-1/2}$ 。通过提高反射镜的反射率和优化激光腔的模式匹配条件，可以进一步提高拟议传感器的 LoD。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Instrumentation and Measurement 工程技术-工程：电子与电气

CiteScore

9.00

自引率

23.20%

发文量

1294

审稿时长

3.9 months

期刊介绍： Papers are sought that address innovative solutions to the development and use of electrical and electronic instruments and equipment to measure, monitor and/or record physical phenomena for the purpose of advancing measurement science, methods, functionality and applications. The scope of these papers may encompass: (1) theory, methodology, and practice of measurement; (2) design, development and evaluation of instrumentation and measurement systems and components used in generating, acquiring, conditioning and processing signals; (3) analysis, representation, display, and preservation of the information obtained from a set of measurements; and (4) scientific and technical support to establishment and maintenance of technical standards in the field of Instrumentation and Measurement.