Hyperspectral microscopy of explosives particles using an external cavity quantum cascade laser

被引：19
|
作者：
Phillips, Mark C. [1 ]
Bernacki, Bruce E. [1 ]
机构：
[1] Pacific NW Natl Lab, Richland, WA 99352 USA
来源：
OPTICAL ENGINEERING | 2013年 / 52卷 / 06期
关键词：
infrared spectroscopy; quantum cascade laser; tunable laser; infrared microscopy; explosives detection; STANDOFF DETECTION; RDX; SPECTROSCOPY; RESOLUTION;
D O I：
10.1117/1.OE.52.6.061302
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Using infrared hyperspectral imaging, microscopy of small particles of the explosives compounds RDX, tetryl, and PETN with near diffraction-limited performance is demonstrated. The custom microscope apparatus includes an external cavity quantum cascade laser illuminator scanned over its tuning range of 9.13 to 10.53 mu m in 4 s, coupled with a microbolometer focal plane array to record infrared transmission images. The hyperspectral microscopy technique is used to study the infrared absorption spectra of individual explosives particles, and demonstrate subnanogram detection limits. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE).
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页数：8
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