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Proceedings Paper

Towards ultra-small pixel pitch cooled MW and LW IR-modules
Author(s): H. Lutz; R. Breiter; D. Eich; H. Figgemeier; S. Hanna; R. Oelmaier; J. Wendler
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Paper Abstract

In recent years a diversity of new IR-detector formats, mainly in MWIR but as well in LWIR spectral range, has been introduced by leading detector manufacturer. These arise from enormous progress in pitch size reduction, while keeping array size manageable. As a consequence, opportunities on system level for modernization and performance enhancement are manifold. Portable systems will benefit from ultra-compact, low power MWIR solutions, while rotorcraft pilotage or surveillance applications will rely on LWIR detector arrays with highest possible resolution. IR-modules providing HD-format (1280x720) in 12μm pixel pitch were already introduced at AIM in 2016 for both MWIR and more challenging LWIR spectral range. Detector arrays with an even smaller pixel pitch of 10μm with XGA format (1024x768) have so far only been realized in MWIR for usage as system upgrade of 640x512, 15μm pitch IRmodules and for an ultra-compact IR-engine in a low power, high operating temperature (HOT) version. The electrooptical characterization of this, recently presented, HOT IR-engine has been continued and performance and design have now further been optimized. Moreover, next steps in pitch size reduction towards wavelength scale are under development at AIM by introducing an XGA format, 10μm pitch LWIR version using an optimized ROIC design and by preparing required technology and processes for an ultra-small pitch of 7.5μm and beyond. In this paper latest performance results of MWIR and LWIR detector arrays with small pixel pitch will be presented, together with design considerations and optimization of associated cooled IR-modules.

Paper Details

Date Published: 8 May 2018
PDF: 16 pages
Proc. SPIE 10624, Infrared Technology and Applications XLIV, 106240B (8 May 2018); doi: 10.1117/12.2304842
Show Author Affiliations
R. Breiter, AIM INFRAROT-MODULE GmbH (Germany)
H. Figgemeier, AIM INFRAROT-MODULE GmbH (Germany)
S. Hanna, AIM INFRAROT-MODULE GmbH (Germany)
R. Oelmaier, AIM INFRAROT-MODULE GmbH (Germany)
J. Wendler, AIM INFRAROT-MODULE GmbH (Germany)

Published in SPIE Proceedings Vol. 10624:
Infrared Technology and Applications XLIV
Bjørn F. Andresen; Gabor F. Fulop; Charles M. Hanson; John Lester Miller; Paul R. Norton, Editor(s)

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