Hyperspectral microscopy using an external cavity quantum cascade laser and its applications for explosives detection

被引：8
作者：
Phillips, M. C. [1 ]
Suter, J. D. [1 ]
Bernacki, B. E. [1 ]
机构：
[1] Pacific NW Natl Lab, Richland, WA 99352 USA
来源：
QUANTUM SENSING AND NANOPHOTONIC DEVICES IX | 2012年 / 8268卷
关键词：
Infrared spectroscopy; quantum cascade laser; tunable laser; infrared microscopy; explosives detection; RESOLUTION;
D O I：
10.1117/12.907488
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Using infrared hyperspectral imaging, we demonstrate microscopy of small particles of the explosives compounds RDX, tetryl, and PETN with near diffraction-limited performance. The custom microscope apparatus includes an external cavity quantum cascade laser illuminator scanned over its tuning range of 9.13-10.53 mu m in four seconds, coupled with a microbolometer focal plane array to record infrared transmission images. We use the hyperspectral microscopy technique to study the infrared absorption spectra of individual explosives particles, and demonstrate sub-nanogram detection limits.
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页数：10
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