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QRAD for Quality in Optical Radiometry

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Photon-counting Radiometers
Photon-counting Radiometers
Photon-counting Radiometers

QRAD Photon-counting Radiometers are single-photon detectors with calibrated detection efficiency. The model based on a Si single-photon avalanche diode (SPAD) covers visible and near-infrared range, while the model with an InGaAs SPAD is suitable for fiber-communication wavelengths.

QS-SP/QS-IGA Single-photon Detector
  • Compact design with temperature-controlled single-photon avalanche diode(SPAD)
    • Free-space input (fiber coupled version on request)
    • Large-area sensor for high collection efficiency
  • Delivery with KRISS test certificates on key performances
  • Model variations
    • QS-SP : Si SPAD with passive quenching
    • QS-SP-F : Fiber coupled QS-SP
    • QS-IGA : InGaAs SPAD with active quenching (in preparation)
    • QS-IGA-F : Fiber coupled QS-IGA (in preparation)
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