Laser-induced fluorescence-cued, laser-induced breakdown spectroscopy biological-agent detection

被引：34

作者：

Hybl, John D. ^{[1
]}

Tysk, Shane M. ^{[1
]}

Berry, Shaun R. ^{[1
]}

Jordan, Michael P. ^{[1
]}

机构：

[1] MIT, Lincoln Lab, Lexington, MA 02420 USA

来源：

APPLIED OPTICS | 2006年 / 45卷 / 34期

关键词：

D O I：

10.1364/AO.45.008806

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Methods for accurately characterizing aerosols are required for detecting biological warfare agents. Currently, fluorescence-based biological agent sensors provide adequate detection sensitivity but suffer from high false-alarm rates. Combining single-particle fluorescence analysis with laser-induced breakdown spectroscopy (LIBS) provides additional discrimination and potentially reduces false-alarm rates. A transportable UV laser-induced fluorescence-cued LIBS test bed has been developed and used to evaluate the utility of LIBS for biological-agent detection. Analysis of these data indicates that LIBS adds discrimination capability to fluorescence-based biological-agent detectors. However, the data also show that LIBS signatures of biological agent simulants are affected by washing. This may limit the specificity of LIBS and narrow the scope of its applicability in biological-agent detection. (c) 2006 Optical Society of America.

引用

页码：8806 / 8814

页数：9

共 25 条

[11] Influence of particle location within plasma and focal volume on precision of single-particle laser-induced breakdown spectroscopy measurements [J].