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MWIR Laser Enables Study of High-Explosive Detonations

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Scientists at the University of Arizona and Pacific Northwest National Laboratories used a broadly tunable swept-wavelength external cavity quantum cascade laser (swept-ECQCL) operating in the midwave infrared (MWIR) spectral region to measure transmission through explosive fireballs generated from charges of four different explosive types detonated in an enclosed chamber. The swept-ECQCL’s broad wavelength tuning range allowed the rapid measurement of multiple chemical substances and large molecules in the fireballs. The high-energy explosives were placed in a specially designed...Read full article

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    Published: September 2019
    Glossary
    mid-wave infrared
    MWIR stands for mid-wave infrared, referring to a specific range of wavelengths within the infrared spectrum. Infrared radiation is categorized into three main regions based on wavelength: near-infrared (NIR), mid-wave infrared (MWIR), and long-wave infrared (LWIR). The MWIR range typically spans from approximately 3 to 8 micrometers (μm). Key points about MWIR: Wavelength range: MWIR encompasses infrared wavelengths ranging from about 3 to 8 micrometers. This range is situated between...
    quantum cascade laser
    A quantum cascade laser (QCL) is a type of semiconductor laser that operates based on the principles of quantum mechanics. It is a versatile and powerful device used for emitting coherent light in the mid-infrared to terahertz range of the electromagnetic spectrum. Quantum cascade lasers were first proposed by Federico Capasso, Jerome Faist, Deborah Sivco, Carlo Sirtori, Albert Hutchinson, and Alfred Cho in 1994. Key features and principles of quantum cascade lasers: Quantum cascade...
    Research & TechnologyeducationAmericasUniversity of ArizonaPacific Northwest National LaboratoriesLasersLight SourcesspectroscopyTest & Measurementlaser measurementTunable Lasersmid-wave infraredquantum cascade laserswept-ECQCLdefenseenergyindustrialmidwave infraredTech Pulse

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