Publications by authors named "Olivier Saint-Pe"

Article Synopsis
  • Silicon Photomultipliers (SiPMs) are compact and efficient single photon detectors that are becoming popular in space applications due to their advantages over traditional photomultiplier tubes, especially in low-power and weight-constrained environments.
  • Exposure to high levels of radiation during space missions can negatively impact SiPM performance, prompting research into understanding and improving their radiation damage effects.
  • The study involved irradiating small area NUV-HD SiPMs and showed that proton damage primarily increases dark count rates, but smaller devices demonstrated better resilience, suggesting future designs could focus on light or charge-focusing mechanisms for enhanced radiation tolerance.
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For the last two decades, the CNES optoelectronics detection department and partners have evaluated space environment effects on a large panel of CMOS image sensors (CIS) from a wide range of commercial foundries and device providers. Many environmental tests have been realized in order to provide insights into detection chain degradation in modern CIS for space applications. CIS technology has drastically improved in the last decade, reaching very high performances in terms of quantum efficiency (QE) and spectral selectivity.

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Single-Photon Avalanche Diodes (SPAD) in Complementary Metal-Oxide Semiconductor (CMOS) technology are potential candidates for future "Light Detection and Ranging" (Lidar) space systems. Among the SPAD performance parameters, the Photon Detection Probability (PDP) is one of the principal parameters. Indeed, this parameter is used to evaluate the SPAD sensitivity, which directly affects the laser power or the telescope diameter of space-borne Lidars.

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We present a CMOS image sensor dedicated to lightning detection and imaging. The detector has been designed to evaluate the potentiality of an on-chip lightning detection solution based on a smart sensor. This evaluation is performed in the frame of the predevelopment phase of the lightning detector that will be implemented in the Meteosat Third Generation Imager satellite for the European Space Agency.

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