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Proceedings Paper

Automatic channel-switched intracavity-absorption acetylene sensor based on mode-competition via Sagnac loop filter
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Paper Abstract

We demonstrate an automatic channel-switched intracavity- absorption acetylene sensor via Sagnac loop filter based on the mode-competition in a ring fiber laser. When the photonic crystal fiber gas cell is filled with 1% acetylene, the corresponding absorption intensity can be ~14.0 dB and ~7.2 dB at 1532.83 nm and 1534.01 nm, respectively. Compared with the single transmission pass method, the sensitivity can be improved up to more than 10 times. It spends 50 seconds in scanning the absorption spectra through applying gradient voltage to the tunable F-P filter.

Paper Details

Date Published: 27 February 2017
PDF: 6 pages
Proc. SPIE 10090, Laser Resonators, Microresonators, and Beam Control XIX, 100901G (27 February 2017); doi: 10.1117/12.2251294
Show Author Affiliations
Haiwei Zhang, Tianjin Univ. (China)
Wei Shi, Tianjin Univ. (China)
Liangcheng Duan, Tianjin Univ. (China)
Ying Lu, Tianjin Univ. (China)
Quan Sheng, Tianjin Univ. (China)
Jianquan Yao, Tianjin Univ. (China)


Published in SPIE Proceedings Vol. 10090:
Laser Resonators, Microresonators, and Beam Control XIX
Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko, Editor(s)

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