Sub-ppb-level CH4 detection by exploiting a low-noise differential photoacoustic resonator with a room-temperature interband cascade laser.

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Authors: Huadan Zheng; Yihua Liu; Haoyang Lin; Ruifeng Kan; Pietro Patimisco; Angelo Sampaolo; Marilena Giglio; Wenguo Zhu; Jianhui Yu; Frank K. Tittel; Vincenzo Spagnolo; Zhe Chen

Journal title: Optics Express

Journal number: 28

Journal publisher: Optical Society of America

Published year: 2020

Published pages: 19446-16456

DOI identifier: 10.1364/oe.391322

ISSN: 1094-4087