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13 October 2010Development of multi-spectral QWIPs for extrasolar planets imaging
One of the most promising approaches for direct imaging of extrasolar planets is based on the next generation of
extremely large ground-based telescopes and original differential observing techniques to overcome atmospheric
fluctuations problems. One possibility is the use of phase-mask coronagraphy coupled with spectral differential imaging.
Multispectral Quantum Well Infrared Photodetectors (QWIPs) are a promising technological solution that could answer
the stringent requirements of this challenging topic.
We present here the scientific background, the technical requirements as well as the possible technical approaches that
are explored in the frame of a project funded by the ANR (Agence Nationale de la Recherche). In particular, we will
describe the strategy retained for the design of the QWIP active layer.
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Alexandru Nedelcu, Eric Pantin, "Development of multi-spectral QWIPs for extrasolar planets imaging," Proc. SPIE 7826, Sensors, Systems, and Next-Generation Satellites XIV, 78261L (13 October 2010); https://doi.org/10.1117/12.865109