Spectroscopy and Spectral Analysis, Volume. 37, Issue 1, 27(2017)
Study on Pressure Characteristics of Photoacoustic Spectroscopy and TDLAS
Based on priciples of PAS and TDLAS, relevance between them was dicussed, while the relationships of PAS and TDLAS signal with pressure were derived. A contrast device for making PAS and TDLAS gas detection simultaneously was designed and constructed to test different pressure and provide a reference for the gas measurement technology selection under different pressure conditions. Experimental studies show that: as the pressure rises, PAS and TDLAS signals become larger, and limit detection sensitivity are improved; with the rising pressure, conversion efficiency from energy absorbed by gas to PAS signals becomes low; at low pressure condiction, PAS is a better choice.
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CHEN Yi-kang, JU Yu, HAN Li. Study on Pressure Characteristics of Photoacoustic Spectroscopy and TDLAS[J]. Spectroscopy and Spectral Analysis, 2017, 37(1): 27
Received: Sep. 25, 2015
Accepted: --
Published Online: Feb. 9, 2017
The Author Email: Yi-kang CHEN (cyk226800@163.com)