期刊
OPTICS LETTERS
卷 47, 期 3, 页码 601-604出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.449822
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资金
- National Natural Science Foundation of China [61505041, 61875047, 62022032]
- Natural Science Foundation of Heilongjiang Province [YQ2019F006]
- Heilongjiang Provincial Postdoctoral Science Foundation [LBH-Q18052]
- Fundamental Research Funds for the Central Universities
An H-shaped acoustic micro-resonator (AmR)-based quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor is demonstrated for the first time, which offers advantages of easy optical alignment, high utilization of laser energy, and improved detection sensitivity compared to a bare quartz tuning fork (QTF)-based sensor.
An H-shaped acoustic micro-resonator (AmR)-based quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor is demonstrated for the first time. The H-shaped AmR has the advantages of easy optical alignment, high utilization of laser energy, and reduction in optical noise. The parameter of the H-shaped AmR is designed based on the standing wave enhancement characteristic. The performance of the H-shaped AmR-based QEPAS sensor system and bare quartz tuning fork (QTF)-based sensor system are measured under the same conditions by choosing water vapor (H2O) as the target gas. Compared with the QEAPS sensor based on a bare QTF, the detection sensitivity of the optimal H-shaped AmR-based QEPAS sensor exhibits a 17.2 times enhancement. (C) 2022 Optica Publishing Group
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