Potentials and limits of mid-infrared laser spectroscopy for the detection of explosives
| Autor: | Ulrike Willer, Ashwini Kumar Sharma, Antoine Muller, Lubos Hvozdara, Gerhard Dr. Holl, Stéphane Blaser, Christoph Bauer, Wolfgang Schade, Björn Braunschweig, Jörg Burgmeier |
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| Rok vydání: | 2008 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) business.industry Far-infrared laser General Engineering General Physics and Astronomy Laser Semiconductor laser theory law.invention Optics Fiber optic sensor law Optoelectronics Explosive detection Gas detector business Quantum cascade laser Spectroscopy |
| Zdroj: | Applied Physics B. 92:327-333 |
| ISSN: | 1432-0649 0946-2171 |
| DOI: | 10.1007/s00340-008-3134-z |
| Popis: | Optical methods are well-established for trace gas detection in many applications, such as industrial process control or environmental sensing. Consequently, they gain much interest in the discussion of sensing methods for counterterrorism, e.g., the detection of explosives. Explosives as well as their decomposition products possess strong absorption features in the mid-infrared (MIR) spectral region between λ=5 and 11 μm. In this report we present two different laser spectroscopic approaches based on quantum cascade lasers (QCLs) operating at wavelengths around λ=5 and 8 μm, respectively. Stand-off configuration for the remote detection of nitro-based explosives (e.g., trinitrotoluene, TNT) and a fiber coupled sensor device for the detection of triacetone triperoxide (TATP) are discussed. |
| Databáze: | OpenAIRE |
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