Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Low-noise quantum well infrared photodetectors for high-resolution thermal imaging

Quantenfilm-Infrarotphotodetektoren mit geringem Rauschen für die hoch auflösende Thermographie
: Schneider, H.; Walther, M.; Fleißner, J.; Rehm, R.; Diwo, E.; Schwarz, K.; Koidl, P.; Weimann, G.

Arakawa, Y.:
Compound Semiconductors 2001. Proceedings of the 28th International Symposium on Compound Semiconductors
Bristol: IOP Publishing, 2002 (IOP Conference Series 170)
ISBN: 0-7503-0856-7
International Symposium on Compound Semiconductors (ISCS) <28, 2001, Tokyo>
Conference Paper
Fraunhofer IAF ()
QWIP; quantum-well; Quantenfilm; infrared detector; Infrarotdetektor; thermal imaging; Thermographie

We report on the layer structure, transport mechanism, and detection properties of low-noise QWIPs. These devices show high detectivity, low signal and noise currents, and distinctive noise characteristics which are analogous to shot noise rather than generation-recombination noise. Based on these detectors, we have realized a novel high-resolution 640x486 thermal imager operating in the 8-12 µm spectral regime with an excellent noise-equivalent temperature difference of better than 10 mK.