ABSORPTION MEASUREMENT OF METHANE GAS WITH A BROAD-BAND LIGHT-SOURCE AND INTERFEROMETRIC SIGNAL-PROCESSING

被引：50

作者：

JIN, W ^{[1
]}

STEWART, G ^{[1
]}

CULSHAW, B ^{[1
]}

MURRAY, S ^{[1
]}

PINCHBECK, D ^{[1
]}

机构：

[1] BRITISH GAS PLC,DIV RES & TECHNOL,ENGN RES STN,NEWCASTLE TYNE NE99 1LH,ENGLAND

来源：

OPTICS LETTERS | 1993年 / 18卷 / 16期

关键词：

D O I：

10.1364/OL.18.001364

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The relationship between methane concentration and second-harmonic output of a particular optical methane-detection system is derived. The system uses a broadband source and a comb filter with its transmission peaks matched to the R-branch absorption fines of methane. An optimal modulation index is obtained, and a noise-limited detection resolution of 0.02% lower explosive level (3-s time constant) is estimated.

引用

页码：1364 / 1366

页数：3

共 5 条

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