Towards a compact, portable, handheld device for contactless real-time standoff detection of hazardous substances
| Autor: | J. Jarvis, David J. M. Stothard, Markus Schwarzenberg, Lorenz Butschek, Jan Grahmann, Marcin Ratajczyk, André Merten, John Macarthur, Stefan Hugger, Marko Haertelt, Ralf Ostendorf, Christopher Carson, Matthew S. Warden |
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| Rok vydání: | 2018 |
| Předmět: |
Background subtraction
Materials science business.industry 010401 analytical chemistry 02 engineering and technology Grating 021001 nanoscience & nanotechnology Laser 01 natural sciences 0104 chemical sciences law.invention Wavelength Cascade law Measuring principle Optoelectronics 0210 nano-technology Quantum cascade laser business Mobile device |
| Zdroj: | Infrared Technology and Applications XLIV. |
| DOI: | 10.1117/12.2305711 |
| Popis: | Here we report our recent achievements towards a compact, portable, handheld device for contactless real-time detection and identification of explosives and hazardous substances via reflectance spectroscopy in the 7.5 μm – 10 μm spectral region. The mid-IR spectroscopic measurement principle relies on selective illumination of the target using broadly tunable external cavity quantum cascade lasers (EC-QCLs). A resonant micro-opto-electro-mechanical systems (MOEMS) grating enables fast wavelength tuning in the external cavity, allowing the full spectral scan to be completed in |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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