APD photodetectors in the Geiger photon counter mode
APD photodetectors in the Geiger photon counter mode
APD photodetectors in the Geiger photon counter mode
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6<br />
Modelization<br />
• Electrical Modelization (VHDL-AMS)<br />
(VHDL AMS)<br />
Vdiode = V G<br />
Cd<br />
Rd<br />
I<br />
V av<br />
Cd : represents <strong>the</strong> capacitance of <strong>the</strong><br />
photodiode : 1pF<br />
Rd : to <strong>mode</strong>l <strong>the</strong> decrease of <strong>the</strong><br />
polarization of <strong>the</strong> photodiode dur<strong>in</strong>g <strong>the</strong><br />
avalanche : 100 Ohms<br />
I : <strong>the</strong> clos<strong>in</strong>g of I <strong>in</strong>duces a voltage<br />
drop from V G to V AV
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