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Conferences > EE > 2015 > ETu4A > ETu4A.2

Calibration-free Handheld sensor based on Tunable Diode Laser Absorption Spectroscopy for Remote Detection of Methane

Wuwen Ding and Liqun Sun

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Abstract

We develop a handheld remote methane sensor based on Tunable Diode Laser Absorption Spectroscopy (TDLAS) in this paper. It is designed as a standoff device for searching for methane leaks from a distance up to 30 m. The ratio of the second-harmonic (2f) and first-harmonic (1f) of the modulation frequency is used to calculate the path-integrated concentration at the 2𝜐3 band of methane located at 1653.7 nm.

© 2015 Optical Society of America

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