Quantum well infrared photodetectors: quantum structures for high-performance thermal imaging

Schneider, H.; Maier, T.; Fleissner, J.; Walther, M.; Koidl, P.; Weimann, G.; Cabanski, W.; Finck, M.; Menger, P.; Rode, W.; Ziegler, J.

Quantum well infrared photodetectors: quantum structures for high-performance thermal imaging

Schneider, H.; Maier, T.; Fleissner, J.; Walther, M.; Koidl, P.; Weimann, G.; Cabanski, W.; Finck, M.; Menger, P.; Rode, W.; Ziegler, J.

Intersubband transitions in GaAs/AlGaAs heterostructures are increasingly used in cameras for the thermal infrared regime. An excellent thermal resolution has been achieved in particular in the 8 - 12 µm spectral range. We report on the basic properties of these quantum well infrared photodetectors (QWIPs) and on the properties of cameras based on these devices in comparison to other detector materials. Finally we address a few applications for which QWIPs are the material of choice.

Keywords: thermal imaging; intersubband; infrared; QWIP

Invited lecture (Conferences)
International Symposium on Advanced Electronics for Future Generations - Secure-Life Electronics for Quality Life and Society, 11.-12.10.2005, Tokyo, Japan

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