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Nonlinear Behavior in Quantum-Well IR Photodetector Is Studied

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Paula M. Powell

Although the potential of quantum-well infrared photodetectors for thermal imaging has been known for some time, significantly less research has been focused on the nonlinear behavior of these devices and on the potential applications of that behavior. Now scientists at Fraunhofer Institut für Angewandte Festkörperphysik in Freiburg, Germany, and at the National Research Council in Ottawa have developed quantum-well IR photodetectors with the ability to characterize mid-IR pulses in the picojoule range. Figure 1. The quantum-well infrared photodetectors have three equidistant subbands in...Read full article

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    Published: August 2004
    Glossary
    thermal imaging
    The process of producing a visible two-dimensional image of a scene that is dependent on differences in thermal or infrared radiation from the scene reaching the aperture of the imaging device.
    Fraunhofer Institut füInfrared photodetectorsmid-IR pulsespicojoule ranger Angewandte FestköResearch & TechnologyrperphysikSensors & DetectorsTech Pulsethermal imaging

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