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Compact terahertz device could improve security screening

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Ashley N. Paddock, [email protected]

Using two mid-infrared laser beams, researchers have finally generated single-chip terahertz radiation at room temperature. The technology could speed up and improve a range of processes, including high-sensitivity biological and chemical analysis, astronomical study, security screening, border protection and agricultural inspection. The project got its start in an unscientific place: the airport security lineup. Like most travelers, Manijeh Razeghi, a professor at Northwestern University's McCormick School of Engineering and Applied Science, was concerned with both the delays in the...Read full article

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    Published: December 2011
    Glossary
    terahertz radiation
    Electromagnetic radiation with frequencies between 300 GHz and 10 THz, and existing between regions of the electromagnetic spectrum that are typically classified as the far-infrared and microwave regions. Because terahertz waves have the ability to penetrate some solid materials, they have the potential for applications in medicine and surveillance.
    agricultural inspectionAmericasbiological analysisBiophotonicsborder protectionCenter for Quantum Deviceschemical analysiscoherent terahertz radiationDARPAdefenseIllinoisManijeh Razeghimedical diagnosticsmid-infrared laser beamsNaval Undersea Wafare CenterNorthwestern Universitypackage inspectionpump lasersquantum cascade lasersResearch & TechnologyScott Rodgerssecurity screeningsingle-chip terahertz radiationTariq ManzurTech Pulseterahertz radiationTHztumor detectionLasers

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