Tag

Photon Counting

All articles tagged with #photon counting

Litavis: On-chip photon processing redefines SPAD imaging
innovation1 month ago

Litavis: On-chip photon processing redefines SPAD imaging

Litavis is Singular Photonics’ SPAD image sensor that performs photon counting, timing, histogramming and photon statistics directly on-chip. The CMOS SPAD device delivers 256×256 continuous photon-counting imaging while producing timestamped events on a 64×64 macropixel grid with picosecond timing, enabling on-chip analysis and reducing data transfer for lower latency and power use. It supports multiple modes (photon-counting imaging, time gating, various TDC configs, TCSPC, coincidence detection) and a flexible platform for diverse applications—from machine vision and robotics to spectroscopy, medical imaging and quantum sensing; pre-orders are underway and demonstrations are planned at SPIE Sensors + Imaging and VISION.

"Revolutionizing Photon Detection with Self-Powered Perovskite Detectors"
science-and-technology3 years ago

"Revolutionizing Photon Detection with Self-Powered Perovskite Detectors"

Researchers have developed self-powered perovskite photon-counting detectors (PCDs) that can rival commercial silicon photomultipliers (SiPMs) for photon counting. The PCDs can collect gamma-ray spectra with better energy resolution than SiPMs and maintain performance at high temperatures up to 85°C. The photon-counting capability of perovskite PCDs is mainly determined by shallow traps, which can be reduced by grain-size enhancement and surface passivation using diphenyl sulfide, respectively. This greatly suppresses dark count rate, enabling much better response to weak light than SiPMs.