Increased detectivity and operation temperature in photonic crystal slab quantum well photodetectors

Increased detectivity and operation temperature in photonic crystal slab quantum well photodetectors

Detectivity enhancement up to 20 times is achieved by fabricating a quantum well infrared photodetector as a photonic crystal slab. This enhancement is the combined effect of increased responsivity and noise current reduction. We report a peak detectivity of 2.6E10 cmHz 1/2 /W at 80 K and were able...

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Hauptverfasser: Kalchmair, S., Gansch, R., Mujagic, E., Ahn, S. I., Reininger, P., Lasser, G., Andrews, A. M., Detz, H., Zederbauer, T., Schrenk, W., Strasser, G.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Dark current
Detectors
Photodetectors
Photonic crystals
Quantum cascade lasers
Slabs
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Beschreibung
Zusammenfassung:Detectivity enhancement up to 20 times is achieved by fabricating a quantum well infrared photodetector as a photonic crystal slab. This enhancement is the combined effect of increased responsivity and noise current reduction. We report a peak detectivity of 2.6E10 cmHz 1/2 /W at 80 K and were able to operate the device up to 200 K.
ISSN:2160-8989
2160-9004
DOI:10.1364/CLEO_SI.2012.CF1M.7