Researching | Wavelength Modulation Off-axis Integrated Cavity Output Spectroscopy for High-sensitivity Detection of OH Radicals in Mid-infrared

Acta Photonica Sinica, Volume. 52, Issue 3, 0352123(2023)

Wavelength Modulation Off-axis Integrated Cavity Output Spectroscopy for High-sensitivity Detection of OH Radicals in Mid-infrared

Nana YANG1...2, Bo FANG1, Chunhui WANG1,3, Hao ZHOU1,2, Nana WEI1, Weixiong ZHAO1,*, and Weijun ZHANG13 |Show fewer author(s)

Author Affiliations

¹Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China

²University of Science and Technology of China, Hefei 230026, China

³School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230026, China

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Fig. 1. Schematic diagram of the experimental setup

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Fig. 2. The effect of ASE on the measurement of OA-ICOS

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Fig. 3. The optimal modulation amptitude of WMS

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Fig. 4. The 2f signals of OH radicals and H₂O when the UV lamp turns off or on

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Fig. 5. OH radical concentrations versus 2f signal intensities

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Fig. 6. Evaluation of the detection limit of OH radicals

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Nana YANG, Bo FANG, Chunhui WANG, Hao ZHOU, Nana WEI, Weixiong ZHAO, Weijun ZHANG. Wavelength Modulation Off-axis Integrated Cavity Output Spectroscopy for High-sensitivity Detection of OH Radicals in Mid-infrared[J]. Acta Photonica Sinica, 2023, 52(3): 0352123

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Paper Information

Category: Special Issue for Frontiers and Techniques of Laser Spectroscopy

Received: May. 25, 2022

Accepted: Jun. 21, 2022

Published Online: Jun. 21, 2023

The Author Email: ZHAO Weixiong (wxzhao@aiofm.ac.cn)

DOI:10.3788/gzxb20235203.0352123

Topics

laser devices and laser physics

Lasers and Laser Optics

laser manufacturing

Instrumentation, Measurement and Metrology