| Autor: |
Xuefeng Mao, Xiaoyan Ji, Yuting Tan, Hao Ye, Xiaofa Wang |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Photoacoustics, Vol 28, Iss , Pp 100391- (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2213-5979 |
| DOI: |
10.1016/j.pacs.2022.100391 |
| Popis: |
A high-sensitivity all-optical photoacoustic spectroscopy based on fast swept laser interferometry is proposed to trace gas detection. The momentary cavity length of the fiber-optic Fabry–Perot microphone is demodulated by a fast swept-laser interferometry with an instantaneous frequency demodulation algorithm. The all-optical photoacoustic spectroscopy based on the designed microphone was tested for trace acetylene gas detection in the near-infrared region. The normalized noise equivalent absorption coefficient for acetylene gas is achieved to be 1.06 × 10−9 cm−1 W Hz−1∕2. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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