DIFFERENTIAL ABSORPTION MEASUREMENT OF METHANE WITH 2 SPATIALLY-RESOLVED LASER LINES

被引：7

作者：

JACOB, D ^{[1
]}

TRAN, NH ^{[1
]}

BRETENAKER, F ^{[1
]}

LEFLOCH, A ^{[1
]}

机构：

[1] SOC APPLICAT GEN ELEC & MECAN, F-95101 ARGENTEUIL, FRANCE

来源：

APPLIED OPTICS | 1994年 / 33卷 / 15期

关键词：

ATMOSPHERIC REMOTE SENSING; DUAL-WAVELENGTH LASER; METHANE DIFFERENTIAL ABSORPTION;

D O I：

10.1364/AO.33.003261

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Simultaneous and independent lasing on two different atomic lines is achieved with spatial resolution of laser eigenstates in conjunction with intracavity frequency selection. A sensitivity of 0.3 part in 10(6) meter in the differential detection of methane in 1 atm of air is experimentally demonstrated with this novel dual-wavelength laser. Monitoring the output intensities of the two orthogonally polarized eigenstates permits absolute measurement of methane concentration.

引用

页码：3261 / 3264

页数：4

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