Methane detection on the sub-ppm level with a near-infrared diode laser photoacoustic sensor

被引：62

作者：

Zéninari, V ^{[1
]}

Parvitte, B ^{[1
]}

Courtois, D ^{[1
]}

Kapitanov, VA ^{[1
]}

Ponomarev, YN ^{[1
]}

机构：

[1] Russian Acad Sci, Siberian Branch, Inst Atmospher Opt, Tomsk 634055, Russia

来源：

INFRARED PHYSICS & TECHNOLOGY | 2003年 / 44卷 / 04期

关键词：

infrared diode laser; photoacoustic detection; methane;

D O I：

10.1016/S1350-4495(03)00135-X

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The Groupe de Spectrometrie Moleculaire et Atmospherique (Reims, France) and the Institute of Atmospheric Optics (Tomsk, Russia) have developed a photoacoustic (PA) system based on differential Helmholtz resonance for infrared gas detection. We demonstrate with this PA cell used in conjunction with a near-infrared diode laser emitting at 1.65 mum the possibility to detect methane in air flow at atmospheric or reduced pressure. The achieved ultimate sensitivity of the PA cell is 2.4 x 10(-11) W cm(-1) with I s integration time. With a diode laser in the 1.65 mum region, this PA cell makes it possible to detect 0.3 ppm of methane in air. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：253 / 261

页数：9

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