Dark Count Rate Reduction of the SPAD Detection Package for SLR

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F15%3A00225723" target="_blank" >RIV/68407700:21340/15:00225723 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Dark Count Rate Reduction of the SPAD Detection Package for SLR
Original language description
We are presenting recent achievements in development of the Single Photon Avalanche Detector (SPAD) packages optimized for satellite laser ranging purposes at high laser repetition rates. The commonly used SPAD detector packages are based on 200 um diameter SPAD chips cooled down to -60°C to lower the effective dark count rate. The detection chips are operated in an active gating and quenching mode. The effective dark count rate of the entire SPAD package is typically 4 kHz for gate rate of 10 Hz. However for modern SLR systems operating typically at 1 kHz rates the effective dark count rate is increasing to 100 kHz and more. This increase is caused by the effect called after-pulsing, which is pronounced by lowered detection chip temperatures. Modifying the SPAD control circuit we succeeded to reduce the after-pulsing influence significantly. As a result the effective dark count rate of the new version of the SPAD detection package is kept well below 10 kHz for the gate rate of 1 kHz.
Czech name
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Czech description
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Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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