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

Haiwei Zhang; Wei Shi; Liangcheng Duan; Ying Lu; Quan Sheng; Jianquan Yao

doi:10.1117/12.2251294

27 February 2017 Automatic channel-switched intracavity-absorption acetylene sensor based on mode-competition via Sagnac loop filter

Haiwei Zhang, Wei Shi, Liangcheng Duan, Ying Lu, Quan Sheng, Jianquan Yao

Author Affiliations +

Proceedings Volume 10090, Laser Resonators, Microresonators, and Beam Control XIX; 100901G (2017) https://doi.org/10.1117/12.2251294
Event: SPIE LASE, 2017, San Francisco, California, United States

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.

Conference Presentation

Citation Download Citation

Haiwei Zhang, Wei Shi, Liangcheng Duan, Ying Lu, Quan Sheng, and Jianquan Yao "Automatic channel-switched intracavity-absorption acetylene sensor based on mode-competition via Sagnac loop filter", Proc. SPIE 10090, Laser Resonators, Microresonators, and Beam Control XIX, 100901G (27 February 2017); https://doi.org/10.1117/12.2251294

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