Equipment for reducing lag and dark current in photon detector, comprises means to convert current pulses to voltage pulses, detect voltage extremes between pulses and subtract extremes from pulse

摘要

A detector (2) produces current pulses in response to incident photons (4) and an amplifier (8) with negative feedback impedance (10) converts the current pulses to voltage pulses. Extreme voltage values between first and second pulses are detected by a circuit (14) and subtracted (12) from the first pulse. The extreme voltage difference detection circuit includes a resistance (20) for extreme voltage resetting