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
收藏
页码：3261 / 3264
页数：4
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