Study on Pressure Characteristics of Photoacoustic Spectroscopy and TDLAS
CHEN Yi-kang1, JU Yu2, HAN Li2
1. China Southern Power Grid EHV Transmission Companies Guangzhou Bureau, Guangzhou 510405, China 2. Institute of Electrical Engineering，Chinese Academy of Sciences, Beijing 100190, China
Abstract：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.
陈奕钪1，鞠 昱2，韩 立2 . 光声光谱与TDLAS技术在不同气压下的特性研究 [J]. 光谱学与光谱分析, 2017, 37(01): 27-31.
CHEN Yi-kang1, JU Yu2, HAN Li2 . Study on Pressure Characteristics of Photoacoustic Spectroscopy and TDLAS. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(01): 27-31.
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