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Proceedings Paper

AIM results for space-qualified HgCdTe photovoltaic detectors from 0.9-um to 13-um spectral range
Author(s): M. Haiml; A. Bauer; H. Bitterlich; M. Bruder; K. Hofmann; H. Lutz; M. Mai; H.-P. Nothaft; I. Rühlich; J. Wendler; T. Wiedmann; R. Wollrab; J. Ziegler
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Paper Abstract

Remote sensing from space is an emerging market for applications in security, climate research, weather forecast, and global environmental monitoring, to mention a few. In particular, next generation systems demand for large, two-dimensional arrays in the short (SWIR, 0.9-2.5 μm) and the very long wavelength infrared (VLWIR) spectral range up to 15 μm. AIM's developments for space applications benefit from AIM's experiences in high-performance thermal imaging and seeker-head applications. AIM has delivered a 13 μm cut-off demonstrator for a high resolution Fourier-transform imaging spectrometer in limb geometry. For this 256 x 256 VLWIR sensor we measured a responsivity of 100 LSB/K and a noise equivalent temperature difference of 22 mK with 14 bit ADCs at 880 Hz full frame-rate. The substrate and epitaxial layer grown at AIM exhibit very good uniformity and low dark currents. Currently, AIM develops a 1024 x 256 SWIR detector (0.9-2.5 μm) with a capacitance transimpedance amplifier (CTIA) for hyperspectral imaging. The radiation hardness of AIM's FPA technology (MCT sensor and Silicon read-out integrated circuit) has been successfully tested by a total ionization dose (TID) experiment using ESTEC's 60Co γ-source. Our reference module withstands 30 krad TID. For enhanced reliability of the IDCA, AIM has developed a compact 1 W pulse-tube cooler with flexure bearing compressor, which induces also a very low vibration output. In summary, AIM will be able to supply space qualified detector modules covering the spectral range from 0.9 to 13 μm in the near future.

Paper Details

Date Published: 3 October 2006
PDF: 12 pages
Proc. SPIE 6361, Sensors, Systems, and Next-Generation Satellites X, 636119 (3 October 2006); doi: 10.1117/12.689700
Show Author Affiliations
M. Haiml, AIM Infrarot-Module GmbH (Germany)
A. Bauer, AIM Infrarot-Module GmbH (Germany)
H. Bitterlich, AIM Infrarot-Module GmbH (Germany)
M. Bruder, AIM Infrarot-Module GmbH (Germany)
K. Hofmann, AIM Infrarot-Module GmbH (Germany)
H. Lutz, AIM Infrarot-Module GmbH (Germany)
M. Mai, AIM Infrarot-Module GmbH (Germany)
H.-P. Nothaft, AIM Infrarot-Module GmbH (Germany)
I. Rühlich, AIM Infrarot-Module GmbH (Germany)
J. Wendler, AIM Infrarot-Module GmbH (Germany)
T. Wiedmann, AIM Infrarot-Module GmbH (Germany)
R. Wollrab, AIM Infrarot-Module GmbH (Germany)
J. Ziegler, AIM Infrarot-Module GmbH (Germany)

Published in SPIE Proceedings Vol. 6361:
Sensors, Systems, and Next-Generation Satellites X
Roland Meynart; Steven P. Neeck; Haruhisa Shimoda, Editor(s)

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