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Quantum-Cascade Lasers Pass Detection Test

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Research exploring directly modulated quantum-cascade lasers as telecommunications detectors generally has used HgCdTe materials, but intersubband devices and intracavity modulators also show potential for high-speed detection. Accordingly, physicists at the University of Neuchâtel in Switzerland evaluated two quantum-cascade laser structures operating as photodetectors up to room temperature. One was a 5.3-µm two-phonon-resonance structure that demonstrated a peak responsivity of 120 µA/W at 2200 cm-1 and that operated at temperatures up to 325 K. The other device, a 9.3-µm...Read full article

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    Published: December 2002
    CommunicationsResearch & TechnologySensors & DetectorsTech Pulse

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