Title :
Dual-colour thermal imaging with InAs/GaSb superlattices in mid-wavelength infrared spectral range
Author :
Rehm, R. ; Walther, M. ; Schmitz, J. ; Fleissner, J. ; Ziegler, J. ; Cabanski, W. ; Breiter, R.
Author_Institution :
Fraunhofer-Inst. fur Angewandte Festkorperphys., Freiburg, Germany
fDate :
5/11/2006 12:00:00 AM
Abstract :
Based on type-II InAs/GaSb superlattice photodiodes, the first report of a dual-colour infrared camera with excellent NETD values<30 mK for the shortwave channel with a cutoff wavelength of 4.0 μm and <17 mK for the longwave channel with 5.0 μm cutoff is presented. The bispectral system, which offers a simultaneous and pixel-registered detection of both colours, allows remote imaging of carbon dioxide.
Keywords :
III-V semiconductors; gallium compounds; image sensors; indium compounds; infrared imaging; photodiodes; semiconductor superlattices; 4.0 micron; 5.0 micron; InAs-GaSb; InAs/GaSb superlattices; bispectral system; carbon dioxide; dual-colour infrared camera; dual-colour thermal imaging; longwave channel; mid-wavelength infrared spectral range; pixel-registered colour detection; remote imaging; shortwave channel; superlattice photodiodes;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20060878
