Real-time measurements of trace gases using a compact difference-frequency-based sensor operating at 3.5 μm

被引：43

作者：

Lancaster, DG ^{[1
]}

Richter, D ^{[1
]}

Curl, RF ^{[1
]}

Tittel, FK ^{[1
]}

机构：

[1] Rice Univ, Rice Quantum Inst, Houston, TX 77005 USA

来源：

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

关键词：

D O I：

10.1007/s003400050513

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The use of a compact gas sensor based on cw difference-frequency generation in periodically poled LiNbO3 for on-line absorption measurements of H2CO, CH4, and H2O near 3.5 mu m is reported. Formaldehyde levels of 30 ppb, corresponding to absorptions of 2 x 10(-4) have been measured using absorption spectroscopy. In this paper we report specifically the performance of this sensor as part of the 1997 Lunar-Mars Life Support Test program at the NASA Johnson Space Center.

引用

页码：339 / 345

页数：7

共 16 条

[11] Compact laser difference-frequency spectrometer for multicomponent trace gas detection [J].