Quad-phase synchronous light detection with 64 X 64 CMOS modulated light camera |
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| Authors: | Johnston N.S. Stewart C. Light R.A. Hayes-Gill B.R. Somekh M.G. Morgan S.P. Sambles J.R. Pitter M.C. |
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| Affiliation: | Inst. of Biophys., Imaging & Opt. Sci., Univ. of Nottingham, Nottingham, UK; |
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| Abstract: | A scalable 64times64 array of feedback buffered photodiodes with column level demodulation circuitry has been fabricated in a 0.35 mum CMOS process. The camera provides two-dimensional phase-sensitive imaging on a line-scan basis using 64 independent quad-phase demodulation channels. Using four phases suppresses even harmonics, enabling the array to be used for heterodyne demodulation. |
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