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Journal Article

Contributed Review: Quantum cascade laser based photoacoustic detection of explosives


Fischer,  H.
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

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Li, J. S., Yu, B., Fischer, H., Chen, W., & Yalin, A. P. (2015). Contributed Review: Quantum cascade laser based photoacoustic detection of explosives. Review of Scientific Instruments, 86(3): 031501. doi:10.1063/1.4916105.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0029-27A3-8
Detecting trace explosives and explosive-related compounds has recently become a topic of utmost importance for increasing public security around the world. A wide variety of detection methods and an even wider range of physical chemistry issues are involved in this very challenging area. Optical sensing methods, in particular mid-infrared spectrometry techniques, have a great potential to become a more desirable tools for the detection of explosives. The small size, simplicity, high output power, long-term reliability make external cavity quantum cascade lasers (EC-QCLs) the promising spectroscopic sources for developing analytical instrumentation. This work reviews the current technical progress in EC-QCL-based photoacoustic spectroscopy for explosives detection. The potential for both close-contact and standoff configurations using this technique is completely presented over the course of approximately the last one decade. (C) 2015 AIP Publishing LLC.