Share Email Print
cover

Proceedings Paper

Infrared focal plane array based on MWIR/LWIR dual-band QWIPs: detector optimization and array properties
Author(s): Harald Schneider; Thomas Maier; Joachim Fleissner; Martin Walther; Peter Koidl; Gunter Weimann; Wolfgang Cabanski; Marcus Finck; Peter Menger; Werner Rode; Johann Ziegler
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Quantum well infrared photodetectors (QWIPs) have gained maturity for large focal plane arrays (FPA) with excellent thermal resolution, low 1/f noise, low fixed-pattern noise, and high pixel operability. Due to their spectrally narrow absorption, QWIPs are particularly suitable for thermal imaging applications involving several atmospheric transmission bands or several colors within the same band. We report on our progress on dual-band QWIP FPAs with pixel-registered, simultaneous integration in both bands. The arrays with 384x288 pixels and 40 μm pitch are based on a photoconductive QWIP for the 3-5 μm regime (MWIR) and a photovoltaic "low-noise" QWIP for 8-12 μm (LWIR). Excellent noise-equivalent temperature differences of only 20.6 mK (LWIR) and 26.7 mK (MWIR) have been achieved at 6.8 ms integration time and f/2 aperture. In addition, we have investigated test devices with different gratings, and discuss their dual-band coupling efficiencies.

Paper Details

Date Published: 7 April 2005
PDF: 8 pages
Proc. SPIE 5726, Semiconductor Photodetectors II, (7 April 2005); doi: 10.1117/12.591546
Show Author Affiliations
Harald Schneider, Frauhofer Institute for Applied Solid State Physics (Germany)
Thomas Maier, Frauhofer Institute for Applied Solid State Physics (Germany)
Joachim Fleissner, Frauhofer Institute for Applied Solid State Physics (Germany)
Martin Walther, Frauhofer Institute for Applied Solid State Physics (Germany)
Peter Koidl, Frauhofer Institute for Applied Solid State Physics (Germany)
Gunter Weimann, Frauhofer Institute for Applied Solid State Physics (Germany)
Wolfgang Cabanski, AEG Infrarot-Module GmbH (Germany)
Marcus Finck, AEG Infrarot-Module GmbH (Germany)
Peter Menger, AEG Infrarot-Module GmbH (Germany)
Werner Rode, AEG Infrarot-Module GmbH (Germany)
Johann Ziegler, AEG Infrarot-Module GmbH (Germany)


Published in SPIE Proceedings Vol. 5726:
Semiconductor Photodetectors II
Marshall J. Cohen; Eustace L. Dereniak, Editor(s)

© SPIE. Terms of Use
Back to Top