26 September 2007 Mid-IR photon counting array using HgCdTe APDs and the Medipix2 ROIC
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Abstract
We present the design of an infrared (IR) photon counting array consisting of an array of mid IR HgCdTe APDs read out with a CMOS application specific integrated circuit (ASIC) developed for x-ray imaging called the Medipix2. The Medipix2 is an array of 256x256 pixels, each of which amplifies and counts pulse events. When combined with an APD whose gain is high enough, the Medipix2 will integrate these detected photons, and the binary readout of these counters will be fast (~ 1kHz framerate) and noiseless. Initial feasibility tests of this concept using individual APDs from DRS technologies Inc. wirebonded to Medipix input pads are discussed.
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John Vallerga, Jason McPhate, Larry Dawson, Maryn Stapelbroek, "Mid-IR photon counting array using HgCdTe APDs and the Medipix2 ROIC", Proc. SPIE 6660, Infrared Systems and Photoelectronic Technology II, 66600O (26 September 2007); doi: 10.1117/12.740664; https://doi.org/10.1117/12.740664
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