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The HPM-100-50 Hybrid Detector: Increased Dynamic Range for DOT

The bh HPM-100-50 module combines a Hamamatsu R10467-50 GaAs hybrid PMT tube with the preamplifier and the generators for the PMT operating voltages in one compact housing. The principle of the hybrid PMT in combination with the GaAs cathode of the R10467-50 yields excellent NIR sensitivity, a clean TCSPC instrument response function, and virtually non-existent afterpulsing. The absence of afterpulsing results in a substantially increased dynamic range of TCSPC experiments. We demonstrate the performance of the new detector for the recording of time-of-flight distributions in experiments of diffuse optical tomography.

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