Difference-frequency laser spectroscopy detection of acetylene trace constituent

被引：32

作者：

Chen, W ^{[1
]}

Mouret, G ^{[1
]}

Boucher, D ^{[1
]}

机构：

[1] Univ Littoral, Lab Phys Chim Atmosphere, F-59140 Dunkerque, France

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 1998年 / 67卷 / 03期

关键词：

D O I：

10.1007/s003400050519

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An all-solid-state laser-based mid-infrared spectrometer has been developed for high-resolution spectroscopy and trace-gas detection. Continuous-wave, broadly tunable infrared radiation was generated from 8 mu m to 19 mu m by difference-frequency mixing of two Ti:sapphire lasers in a GaSe crystal. This difference-frequency generation source was used for the detection of acetylene in air near 13.7 mu m. The trace constituent of acetylene has been measured and quantitatively determined by using its Q branch of the v(5) band spectrum. Spectroscopic detection of 28 ppmm/Hz(1/2) was performed. This corresponds to a minimum detectable mixing ratio of similar to 1 ppb in conjunction with a 100-m White cell and balanced detection.

引用

页码：375 / 378

页数：4

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