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Dual-colour thermal imaging with InAs/GaSb superlattices in mid-wavelength infrared spectral range

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7 Author(s)
Rehm, R. ; Fraunhofer-Inst. fur Angewandte Festkorperphys., Freiburg, Germany ; Walther, M. ; Schmitz, J. ; Fleissner, J.
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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.

Published in:

Electronics Letters  (Volume:42 ,  Issue: 10 )

Date of Publication:

11 May 2006

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