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
- Acta Photonica Sinica
- Vol. 52, Issue 3, 0352123 (2023)
Fig. 1. Schematic diagram of the experimental setup
Fig. 2. The effect of ASE on the measurement of OA-ICOS
Fig. 3. The optimal modulation amptitude of WMS
Fig. 4. The 2f signals of OH radicals and H2O when the UV lamp turns off or on
Fig. 5. OH radical concentrations versus 2f signal intensities
Fig. 6. Evaluation of the detection limit of OH radicals
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