Dark Count Rate Reduction of the SPAD Detection Package for SLR

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Dark Count Rate Reduction of the SPAD Detection Package for SLR

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Dark Count Rate Reduction of the SPAD Detection Package for SLR

Popis výsledku anglicky

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.

Druh

O - Ostatní výsledky

CEP obor

JB - Senzory, čidla, měření a regulace

OECD FORD obor

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Projekt

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Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů