Title: Method for collecting snowslide signal of APD single photon detector
Application Number: 200510123856 Application Date: 2005.11.23
Publication Number: 1758037 Publication Date: 2006.04.12
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01J11/00,G01T1/17,G01T1/24,H01L31/02,H04B10/08,H04K1/00
Applicant(s) Name: Inst. of Physics, CAS Address: 100080
Inventor(s) Name: Sun Zhibin, Yang Handong, Ma Haiqiang, Zhai Guangj
Attorney & Agent: yin zhenqi
Abstract:
     This invention discloses a method for extracting avalanche signals of the APD single photon detector including the following steps: after the triggering signals pass through a trigger delay unit, part of them is added into the cathode of APD after passing through a gated pulse control unit, then current samples are carried out at the anode to get the original signals, the other part is input into the trigger via the counting delay unit and the control unit, the original signals are sent into the trigger via a comparator as the clock of the trigger, which finishes the pulse extraction of APD avalanche signals triggered by the two parts of signals, part of the extracted pulses is fed back to a dead zone time control unit , the other part outputs signals from the output of the trigger and outputs pulse signals with controlled pulse width via a width control unit.
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