SINGLE PHOTON COUNTING
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United States of America Patent
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app pub date -
Jan 30, 2014
filing date -
Jan 31, 2013
priority date (Note) -
Abandoned
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Abstract
A single photon counting apparatus comprising a SPAD and a controller. The controller is operable to vary the operating parameters of the SPAD during use in response to a count rate detected by the SPAD. The operating parameters comprising at least one of the voltage across the SPAD during an active period, the voltage across the SPAD during a quench period, the duration of the quench period and the temperature of the SPAD. Particle characterisation instruments comprising the apparatus are also disclosed.
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