Differential absorption lidar at 1.67 /spl mu/m for the detection of methane gas leakage

Author

Ikuta, K. ; Vasa, N.J. ; Oki, Y. ; Maeda, M. ; Uchiumi, M.

Author_Institution

Graduate Sch. of Inf. Sci. & Electr. Eng., Kyushu Univ., Fukuoka, Japan

Volume

2

fYear

1999

fDate

Aug. 30 1999-Sept. 3 1999

Firstpage

274

Abstract

Differential absorption lidar (DIAL) is very useful for remote sensing of atmospheric molecules. Methane (CH/sub 4/) is one of the greenhouse gases and for the DIAL experiments, the absorption around 3.39 /spl mu/m is usually used. Continuous monitoring of the flamable CH/sub 4/ gas leakage is very important especially in a factory or along a gas pipe line. In the case of such a high concentration monitoring, absorption around 1.67 pm can be used. In this paper, we developed a DIAL system to detect CH/sub 4/ at a wavelength of 1.67 /spl mu/m Infrared (IR) laser source at 1.67 /spl mu/m is easily obtainable and fast photodetectors, such as InGaAs PIN photodiodes are available in this range.

Keywords

chemical variables measurement; infrared detectors; leak detection; optical radar; p-i-n photodiodes; photodetectors; remote sensing by laser beam; spectrochemical analysis; 1.67 mum; 30 m; 500 m; CH/sub 4/; DIAL experiments; IR laser source; InGaAs; InGaAs PIN photodiodes; concentration monitoring; continuous monitoring; differential absorption lidar; factory; fast photodetectors; flamable CH/sub 4/ gas leakage; gas pipe line; greenhouse gas; methane; methane gas leakage detection; Electromagnetic wave absorption; Gas lasers; Global warming; Indium gallium arsenide; Infrared detectors; Laser radar; PIN photodiodes; Photodetectors; Production facilities; Remote monitoring;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 1999. CLEO/Pacific Rim '99. The Pacific Rim Conference on

Conference_Location

Seoul, South Korea

Print_ISBN

0-7803-5661-6

Type

conf

DOI

10.1109/CLEOPR.1999.811410

Filename

811410