The intra-cavity QEPAS sensor using fiber-ring laser for C2H2 and CO2 detection

被引：2
|
作者：
Zhang, Hengbiao [1 ,2 ]
Yu, Yuanfang [1 ,2 ]
Bi, Shaoqiang [1 ,2 ]
Zhang, Qinduan [3 ,4 ]
Tian, Cunwei [1 ,2 ]
Wang, Zongliang [1 ,2 ,5 ,6 ]
机构：
[1] Liaocheng Univ, Sch Phys Sci & Informat Technol, Liaocheng, Peoples R China
[2] Liaocheng Univ, Shandong Key Lab Opt Commun Sci & Technol, Liaocheng, Peoples R China
[3] Qilu Univ Technol, Shandong Acad Sci, Laser Inst, Jinan, Peoples R China
[4] Qilu Univ Technol, Shandong Acad Sci, Int Sch Optoelect Engn, Jinan, Peoples R China
[5] Liaocheng Univ, Sch Phys Sci & Informat Technol, Liaocheng 252000, Peoples R China
[6] Liaocheng Univ, Shandong Key Lab Opt Commun Sci & Technol, Liaocheng 252000, Peoples R China
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2023年 / 65卷 / 11期
基金：
中国国家自然科学基金;
关键词：
acousto-optic modulation; fiber Bragg grating; fiber-ring laser; QEPAS gas sensor; PPB-LEVEL DETECTION; AMPLIFIED LASER; QUARTZ; SPECTROSCOPY;
D O I：
10.1002/mop.33808
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An intra-cavity quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor using fiber-ring laser is demonstrated. The sensor includes an erbium-doped fiber (EDF) intra-cavity laser and a quartz tuning fork (QTF), and realizes wavelength scanning through a piezoelectric transducer (PZT). The acousto-optic modulator (AOM) is used to modulate laser intensity at a frequency of 32.758 kHz. We use optical switches to detect acetylene (C2H2) and carbon dioxide (CO2) at 1530.37 and 1572.66 nm, respectively, based on the time division multiplexing (TDM) technology. The two-component gas sensor showed good linearity of 0.9996 and 0.9966, and could achieve a minimum detection limit (MDL) of 180.64 ppbv and 145.45 ppmv for C2H2 and CO2 detection, respectively.
引用
收藏
页码：3021 / 3026
页数：6
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