CO2 LASER-BASED DIFFERENTIAL ABSORPTION LIDAR SYSTEM FOR RANGE-RESOLVED AND LONG-RANGE DETECTION OF CHEMICAL-VAPOR PLUMES

被引：57

作者：

CARLISLE, CB ^{[1
]}

VANDERLAAN, JE ^{[1
]}

CARR, LW ^{[1
]}

ADAM, P ^{[1
]}

CHIARONI, JP ^{[1
]}

机构：

[1] CTR ETUD BOUCHET,TELEDETECT LAB,F-91719 VERT LE PETIT,FRANCE

来源：

APPLIED OPTICS | 1995年 / 34卷 / 27期

关键词：

LIDAR; DIAL; REMOTE SENSING;

D O I：

10.1364/AO.34.006187

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A dual CO2 laser-based differential absorption lidar (DIAL) system has been constructed and demonstrated for range-resolved mapping of chemical vapor plumes. The system acquires high range resolution through the use of plasma-shutter pulse clippers that extinguish the nitrogen tail of the CO2-laser output. A programmable servomotor-driven scanner allows full hemispherical coverage of the interrogated field. A high-speed direct-detection receiver subsystem is used to gather, process, and display vapor-concentration data in near real time. Data demonstrating range-resolved detection of low concentrations of chemical plumes from ranges of 1 to 2 km are presented. In the column-content detection mode, trace levels of secondary vapors from various organophosphate liquids were monitored. Detection of an SF6 vapor plume released 16 km from the DIAL system is also adduced.

引用

页码：6187 / 6200

页数：14

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