26 October 2007 Ultra-fast time-correlated single photon counting avalanche photodiodes for time-domain non-contact fluorescence diffuse optical tomography
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Proceedings Volume 6796, Photonics North 2007; 679606 (2007) https://doi.org/10.1117/12.778937
Event: Photonics North 2007, 2007, Ottawa, Canada
Abstract
Recent advances in the design and fabrication of avalanche photodiodes (APDs) and quenching circuits for timecorrelated single photon counting (TCSPC) have made available detectors with timing resolutions comparable to microchannel plate photomultiplier tubes (MCP-PMTs). The latter, were until recently the best TCSPC detectors in terms of temporal resolution (≤30ps). Comparable resolutions can now be obtained with TCSPC APDs at a much lower cost. It should also be possible to manufacture APDs with standard electronics fabrication processes in a near future. This will contribute to further decrease their price and ease their integration in complex multi-channel detection systems, as required in diuse optical imaging (DOI) and tomography (DOT). We present, to our knowledge for the first time, results which demonstrate that, despite their small sensitive area, TCSPC APDs can be used in time-domain (TD) DOT and more generally in TD DOI. With appropriate optical design of the detection channel, our experiments show that it is possible to obtain comparable measurements with APDs as with PMTs.
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Vincent Robichaud, Vincent Robichaud, Éric Lapointe, Éric Lapointe, Yves Bérubé-Lauzière, Yves Bérubé-Lauzière, } "Ultra-fast time-correlated single photon counting avalanche photodiodes for time-domain non-contact fluorescence diffuse optical tomography", Proc. SPIE 6796, Photonics North 2007, 679606 (26 October 2007); doi: 10.1117/12.778937; https://doi.org/10.1117/12.778937
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