Studies of cavity enhanced absorption spectroscopy for weak absorption gas measurements

Liucheng Li; Liping Duo; Deyu Gong; Yanhua Ma; Zhiguo Zhang; Yuanhu Wang; Dongjian Zhou; Yuqi Jin

doi:10.1117/12.2256664

13 January 2017 Studies of cavity enhanced absorption spectroscopy for weak absorption gas measurements

Liucheng Li, Liping Duo, Deyu Gong, Yanhua Ma, Zhiguo Zhang, Yuanhu Wang, Dongjian Zhou, Yuqi Jin

Proceedings Volume 10254, XXI International Symposium on High Power Laser Systems and Applications 2016; 102541E (2017) https://doi.org/10.1117/12.2256664
Event: XXI International Symposium on High Power Laser Systems and Applications, 2016, Gmunden, Austria

Abstract

In order to determine the concentrations of trace amount metastable species in chemical lasers, an off-axis cavity enhanced absorption spectrometer for the detection of weak absorption gases has been built with a noise equivalent absorption sensitivity of 1.6x10-8 cm-1. The absorption spectrum of trace amount gaseous ammonia and water vapor was obtained with a spectral resolution of about 78 MHz. A multiple-line absorption spectroscopic method to determine the temperature of gaseous ammonia has been developed by use of multiple lines of ammonia molecule absorption spectrum.

Citation Download Citation

Liucheng Li, Liping Duo, Deyu Gong, Yanhua Ma, Zhiguo Zhang, Yuanhu Wang, Dongjian Zhou, and Yuqi Jin "Studies of cavity enhanced absorption spectroscopy for weak absorption gas measurements", Proc. SPIE 10254, XXI International Symposium on High Power Laser Systems and Applications 2016, 102541E (13 January 2017); https://doi.org/10.1117/12.2256664

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