Abstract
We demonstrate a methane sensor based on reflective mode-phase-difference photothermal spectroscopy. With a 1.8-m-long anti-resonant hollow-core fiber and a 3.27 μm pump laser, a noise-equivalent concentration of 44 ppt is achieved with 800 s integration time.
© 2022 The Author(s)
PDF ArticleMore Like This
Yingzhen Hong, Haihong Bao, Shoufei Gao, Hoi Lut Ho, Wang Yingying, and Wei Jin
Th1.3 Optical Fiber Sensors (OFS) 2022
Mengyuan Hu, Chenyu Yao, Andrea Ventura, Juliano Grigoleto Hayashi, Francesco Poletti, and Wei Ren
ETu4H.2 Optics and Photonics for Sensing the Environment (ES) 2022
Feifan Chen, Shoulin Jiang, Wei Jin, Shoufei Gao, and Hoi Lut Ho
M4E.3 Optoelectronics and Communications Conference (OECC) 2021