Signal and performance model for imaging systems with SPAD detectors

Orges Furxhi; Joshua Follansbee; Derek Burrell

doi:10.1117/12.2663503

14 June 2023 Signal and performance model for imaging systems with SPAD detectors

Orges Furxhi, Joshua Follansbee, Derek Burrell

Proceedings Volume 12533, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXXIV; 125330B (2023) https://doi.org/10.1117/12.2663503
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States

Abstract

Single Photon Avalanche Diodes (SPAD) have shown great promise for use in Lidar and low light applications. Although staring arrays were initially developed for medical applications, recent Lidar sensor solution demands have fueled the development of large count staring sensors with quantum efficiencies extending in the NIR/SWIR and with exotic readout circuits. The same technology also enables low light systems with sensitivity below conventional CMOS. As the name implies, SPAD detectors are sensitive to single photons, behave as stochastic devices, and require special treatment for signal interpretation. In this paper, we describe a signal and noise model for both active and passive SPAD based imaging systems that includes the generation of readout events based on the SPAD detector stochastic model. The model presented here allows the evaluation of SPAD based systems under specific illumination conditions and enables the evaluation of SPAD and sensor parameter system sensitivity.

Conference Presentation

Citation Download Citation

Orges Furxhi, Joshua Follansbee, and Derek Burrell "Signal and performance model for imaging systems with SPAD detectors", Proc. SPIE 12533, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXXIV, 125330B (14 June 2023); https://doi.org/10.1117/12.2663503

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