Title :
High-resolution 3-5 μm/8-12 μm dual-band quantum well infrared photodetector array
Author :
Schneider, H. ; Maier, T. ; Fleissner, J. ; Walther, M. ; Koidl, P. ; Weimann, G. ; Cabanski, W. ; Finck, M. ; Menger, P. ; Rode, W. ; Ziegler, J.
Author_Institution :
Fraunhofer Inst. for Appl. Solid State Phys., Freiburg, Germany
fDate :
6/24/2004 12:00:00 AM
Abstract :
A dual-band focal plane array (FPA) for the 8-12 μm and 3-5 μm atmospheric windows with simultaneous integration in both spectral bands on each pixel is reported. The FPA is based on quantum well infrared photodetectors and comprises 384×288 pixels with 40 μm pitch. At 7.6 ms integration time and an f/2 aperture, the FPA achieves excellent thermal resolution with noise-equivalent temperature differences of 17 mK (3-5 μm) and 43 mK (8-12 μm).
Keywords :
focal planes; infrared detectors; photodetectors; quantum well devices; 3 to 5 micron; 40 micron; 7.6 ms; 8 to 12 micron; atmospheric window; dual band focal plane array; dual band quantum well infrared photodetector array; noise equivalent temperature; spectral bands; thermal resolution;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040555
