Sensitive carbon monoxide detection based on laser absorption spectroscopy with hollow-core antiresonant fiber

被引：44

作者：

Chen, Weipeng ^{[1
]}

Qiao, Shunda ^{[1
]}

Zhao, Zixu ^{[1
]}

Gao, Shoufei ^{[2
]}

Wang, Yingying ^{[2
]}

Ma, Yufei ^{[1
]}

机构：

[1] Harbin Inst Technol, Natl Key Lab Sci & Technol Tunable Laser, Harbin 150001, Peoples R China

[2] Jinan Univ, Inst Photon Technol, Guangzhou, Peoples R China

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2024年 / 66卷 / 01期

基金：

中国国家自然科学基金;

关键词：

carbon monoxide; hollow-core antiresonant fiber; trace gas detection; tunable diode laser absorption spectroscopy (TDLAS); QUARTZ-TUNING-FORK; SENSOR;

D O I：

10.1002/mop.33780

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：

A carbon monoxide (CO) sensing system based on hollow-core antiresonant fiber (HC-ARF) is developed using tunable diode laser absorption spectroscopy (TDLAS) technology. A HC-ARF with length of 75 cm is applied as light transmission passage and gas chamber. Compared with conventional multipass cell, HC-ARF has the advantages of compact volume, low cost, steady transmission, and simple optical alignment. Two techniques of direct absorption spectroscopy (DAS) and wavelength modulation spectroscopy (WMS) were used respectively. In DAS, the minimum detection limit (MDL) was 12251.04 ppm. In WMS, the modulation depth of this HC-ARF based CO-TDLAS sensor was optimized to be 0.13 cm(-1) and the R-squared numeric of the linear relationship between the peak of the 2 f signal and the gas concentration was 0.99, indicating that the system has a nice linear responsiveness to the CO gas concentration. Finally, the MDL of the sensor was calculated to be 196.33 ppm.

引用

页数：8

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