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Paper: C3Po — The Ultimate Focal Plane Array for Imaging Polarimetryfrom 200 nm to 20 μm
Volume: 343, Astronomical Polarimetry: Current Status and Future Directions
Page: 33
Authors: Keller, C.U.
Abstract: C3Po is a novel array detector concept that is optimized for highly sensitive and precise differential imaging. Chopping between two or more independent image states (such as four linearly independent polarization states) can be performed at speeds in the kHz domain to provide virtually simultaneous images without the need to read out the array at kHz frame rates. This allows the technology to be applied to large arrays with precise, slow readouts. All independent image planes are observed with the same physical pixel on the detector, which renders normalized differences between image planes insensitive to the gain of individual pixels. The detector concept has 100% geometrical fill factor and a quantum efficiency approaching unity. The technology can be applied to silicon to cover the 200–1100 nm wavelength range, and to infrared-sensitive materials such as HgCdTe or InSb for the 1-20 μm wavelength range. The detector concept has a wide range of potential applications outside of astronomy.
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