期刊
CHINESE OPTICS LETTERS
卷 20, 期 3, 页码 -出版社
OSA-OPTICAL SOC
DOI: 10.3788/COL202220.031201
关键词
light-induced thermoelastic spectroscopy; quartz tuning fork; CO concentration
类别
资金
- National Natural Science Foundation of China [62022032, 61875047, 61505041]
- Natural Science Foundation of Heilongjiang Province of China [YQ2019F006]
- Fundamental Research Funds for the Central Universities
- Heilongjiang Province Postdoctoral Foundation [LBH-Q18052]
A carbon monoxide (CO) sensor based on light-induced thermoelastic spectroscopy (LITES) with a fiber-coupled multipass cell was demonstrated, showing excellent linear concentration response and system stability. The sensor achieved a minimum detection limit of 9 ppm and a calculated normalized noise equivalent absorption coefficient of 1.15 x 10(-7) cm(-1).W.Hz(-1/2).
A sensor based on light-induced thermoelastic spectroscopy (LITES) with a fiber-coupled multipass cell was demonstrated for carbon monoxide (CO) detection. The fiber-coupled structure has the merits of reducing optical interference and difficulty in optical alignment and increasing system robustness. A 1.57 mu m continuous wave distributed feedback diode laser was used as the excitation source. A minimum detection limit of 9 ppm was obtained, and the calculated normalized noise equivalent absorption coefficient was 1.15 x 10(-7) cm(-1).W.Hz(-1/2). The reported CO-LITES sensor showed excellent linear concentration response and system stability.
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