用于遥感与三过氧化三丙酮相关气体的差分吸收激光雷达二氧化碳激光系统。

Differential absorption lidar CO2 laser system for remote sensing of TATP related gases.

作者信息

Pal Avishekh, Clark C Douglas, Sigman Michael, Killinger Dennis K

机构信息

University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, USA.

出版信息

Appl Opt. 2009 Feb 1;48(4):B145-50. doi: 10.1364/ao.48.00b145.

DOI:10.1364/ao.48.00b145

PMID:19183572

Abstract

A CW tunable 10.6 microm CO(2) laser differential absorption lidar (DIAL) system has been developed, for the first time to our knowledge, for the remote sensing of triacetone triperoxide (TATP) gas vapors, which have strong absorption lines at several wavelengths, including 3.3, 8.3, and 10.6 microm. The DIAL laser beam was transmitted through an enclosed absorption cell containing TATP or SF(6), and backscattered returns were measured from a retroreflector array target at ranges of 5-100 m. DIAL sensitivity for the detection of TATP was about 0.5 ng/microl [52 parts in 10(6)(ppm)] for a 0.3 m path.

摘要

据我们所知，首次研制出了一种连续波可调谐10.6微米二氧化碳激光差分吸收激光雷达（DIAL）系统，用于遥感三丙酮三过氧化物（TATP）气体蒸汽，该气体在包括3.3、8.3和10.6微米等多个波长处有强吸收线。DIAL激光束透过一个装有TATP或六氟化硫（SF₆）的封闭吸收池进行传输，并在5至100米的距离处从后向反射器阵列目标测量反向散射回波。对于0.3米的路径，检测TATP的DIAL灵敏度约为0.5纳克/微升[百万分之52（ppm）]。