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Mid-IR LEDs Suggest Scene-Generation Applications

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Scientists at the US Army Research Laboratory in Adelphi, working with Maxion Technology of Hyattsville, both in Maryland, have reported wall-plug efficiencies of up to 2.8 percent from 3.8-µm interband cascade LEDs at 77 K. The emitters have potential applications in the generation of simulated infrared environments for tests that incorporate military hardware, as well as in the development of IR countermeasures and of chemical and biological sensors. In the work, the investigators compared the performance of type-II devices that featured various numbers of active/injection layers and...Read full article

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    Published: September 2005
    Glossary
    infrared
    Infrared (IR) refers to the region of the electromagnetic spectrum with wavelengths longer than those of visible light, but shorter than those of microwaves. The infrared spectrum spans wavelengths roughly between 700 nanometers (nm) and 1 millimeter (mm). It is divided into three main subcategories: Near-infrared (NIR): Wavelengths from approximately 700 nm to 1.4 micrometers (µm). Near-infrared light is often used in telecommunications, as well as in various imaging and sensing...
    As We Go To Pressbiological sensorsBreaking NewsdefenseinfraredIR countermeasuresMaxion TechnologPresstime BulletinSensors & DetectorsUS Army Research Laboratory

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