首页|Single-photon laser methane detection methodology and initial validation

Single-photon laser methane detection methodology and initial validation

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Responding to the urgency of remote sensing for monitoring large concentrations of methane leakage,a high-speed modu-lation continuous laser methane leakage remote methodology based on a near-infrared single-photon avalanche diode detector[SPAD]and a lower power distributed feedback laser was developed.Based on the proposed laser modulation and time-correlated single-photon counting method,the method could simultaneously detect the methane concentration and background target distance.The effects of SPAD dead time and after-pulse probability on the intensity of methane spectra were investigated.The proposed ranging and methane sensing method was also demonstrated by conducting out-field observation through the verification system.The measured methane absorption spectral intensity was verified and consistent with theoretical value.The initial validation results provide a new scheme for subsequent single-photon gas detection,and reference for subsequent methane monitoring equipment development.

single-photon avalanche diodemethaneremote sensingcontinuous laser modulation spectroscopy

朱首正、刘世界、唐国良、何欣、王森远、杨诗承、黄浦江、杨文航、周浩、赵帮健、李春来、王建宇

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Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou 310024,China

Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China

University of Chinese Academy of Sciences,Beijing 100049,China

Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China

School of Information Science and Technology,ShanghaiTech University,Shanghai 201210,China

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2024

10.3788/COL202422.100101

中国光学快报(英文版)
中国光学学会 中国科学院上海光学精密机械研究所

中国光学快报(英文版)

CSTPCD
影响因子：1.305
ISSN：1671-7694
年,卷(期)：2024.22(10)