Hyperspectral Microscopy of Explosives Particles Using an External Cavity Quantum Cascade Laser
Journal Article
·
· Optical Engineering, 52(6):Article No. 061302
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 µm 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.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1074321
- Report Number(s):
- PNNL-SA-90600
- Journal Information:
- Optical Engineering, 52(6):Article No. 061302, Journal Name: Optical Engineering, 52(6):Article No. 061302
- Country of Publication:
- United States
- Language:
- English
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