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3 May 2010 HgCdTe-based APD focal plane array for 2D and 3D active imaging: first results on a 320 x 256 with 30 µm pitch demonstrator
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Abstract
CEA-Leti has developed a new 320x256 hybrid focal plane array (FPA) for flash LADAR imaging. The detector array consists of 30μm pixel pitch MWIR HgCdTe avalanche photodiodes operating at 80K and the readout integrated circuit (ROIC) is fabricated on a standard 0.18μm CMOS process. The custom ROIC can operate as a passive thermal imager or a flash LADAR imager. In this second mode, each pixel will provide the time of flight measurement (3D) and the returned intensity (2D) of one laser pulse. For the first laboratory trials the e-APD photodiode array performances were measured in passive mode and the same FPA was then tested in one shot LADAR mode. This paper describes the readout IC pixel architecture and reports the first electro-optical test results in both passive and active modes. This new prototype takes advantage of the latest developments of the partnership between Sofradir and CEA-Leti.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Eric de Borniol, Fabrice Guellec, Johan Rothman, André Perez, Jean-Paul Zanatta, Michael Tchagaspanian, Pierre Castelein, Gérard Destéfanis, Jean-Christophe Peyrard, and Frédéric Pistone "HgCdTe-based APD focal plane array for 2D and 3D active imaging: first results on a 320 x 256 with 30 µm pitch demonstrator", Proc. SPIE 7660, Infrared Technology and Applications XXXVI, 76603D (3 May 2010); https://doi.org/10.1117/12.850689
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