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This paper introduces a readout circuit designed to interface with the fluorescence sensor presented in O'Sullivan et al., 2010., a monolithically integrated GaAs detector and vertical-cavity surface-emitting laser (VCSEL). The detector signals to be measured are low currents in the range of 5pAto15nA, with bandwidths up to 100 Hz. In order to capture binding dynamics of the fluorescent probe, as...
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